TRANSACTIONS
OP THE
JL.Js/Ltt'RTC-A- 1ST
ENTOMOLOGICAL SOCIETY.
vol. v.
PHILADELPHIA.
FEINTED BY THE SOCIETY. 1874—1876.
LIST OF PAPERS.
CRESSON, E. T. page
Descriptions of new Ilymenoptera. .... 99
Descriptions of new species of Mutilla. ... 119
Crotch, Gi. R.
Descriptions of new species of Coleoptera from the Pacific Coast of the United States. - - - 73
Edwards, Wm. H.
Descriptions of new species of Diurnal Lepidoptera fouud in North America. - - - - - 13, 103
Description of a uew species of Catocala from Arizona. 112 Descriptions of new species of Diurnal Lepidoptera found within the United States and British North America. 202 New species of Diurnal Lepidoptera. ... 2S9
Grote, Aug. R.
Remarks on North Americau Noctuidae with descriptions
of new species. ------- 89
Descriptions of North American Moths. - - - 113
Note on Papilio Gundlachianus. - - - - 118
Horn, Geo. H.
Revision of the species of Trox of the United States. - 1
Descriptions of new species of United States Coleoptera. 20 Notes on the species of Rhipiphorus of the United States. 121 Synonymical Notes and Descriptions of new species of North American Coleoptera. ----- 126
Revision of the United States species of Ochodmus and other genera of Scarabseidae. ----- 177
IV
Horn, Geo. IT. page
Notes on the Coleopterous fauna of Guadalupe Island. 198 Description of a new species of Dacoderus from the Island of Santo Domingo. ------ 219
Synopsis of the species of Cymatodcra and Trichodes of the United States. ------ 220
The sexual characters of North American Cicindelidse with notes on some groups of Cicindela. ... 232
Notes on some Coleopterous Remains from the bone cave of Port Kennedy, Pennsylvania. .... 241
Synoptic tables of some genera of Coleoptera, with notes and synonymy. ....... 246
Revision of the species of Chheuius of the United States. 253 LeConte, John L.
Descriptions of new Coleoptera chiefly from the Pacific
slope of North America. ----- 43
Notes on the genus Pleocoma, Lee. 81
On the Cupesidae of North America. 87
Notes on the Cicindelidae of the United States. - - 157
Notes on the Rhysodidae of the United States. - - 162
Descriptions of new Coleoptera of the United States, with Notes on Geographical Distribution. - - - 169
On the Affinities of Hypocephalus. - - - - 209
McCook, Henry C.
Notes on the architecture and habits of Formica Pennsyl- vanica, the Pennsylvania Carpenter Ant. - - 277
OSTEN SACKEN, R.
Description of the Larva of Pleocoma, Lee.
84
TiR^nsrs^CTionsrs
OF THE
AMERICAN ENTOMOLOGICAL SOCIETY.
VOLUME V-
Revision of the Species of TROX of the United States.
BY GEO. H. HORN, M. D.
In the ninth and tenth parts of the Coleopterologische Hefte (Mu¬ nich, 1872), Harold has published an elaborate monograph of the species of Trox, in which ninety-three species are fully described from the entire globe, fifteen remain unknown to him, of which seven be¬ long to our fauna. With the view of endeavoring to supply the deficiency, as far as our species are concerned, as well as of making known to American students the results of Harold’s studies, the fol¬ lowing brief memoir has been prepared.
Our species may be separated into two groups, characterized as follows :
Scutellum hastate, that is, narrowed strongly near the base, the sides
at middle angulate; sides of thorax never setose . Group I.
Scutellum oval, never hastate ; sides of thorax in many species setose. ..Group II.
Group I.
The first group contains all the larger forms and may be divided into winged and apterous species. The latter have the elytra of oval form, the humeri broadly rounded and no humeral umbone; the meta¬ sternum is always very short and the rhomboidal space at its middle much broader than long. The winged species have oblong elytra, the humeri more abrupt and the umbone always distinct; the meso- sternum is normal in form and the rhomboidal space at middle at least as long as wide.
The following table gives the other characters : I
Elytra oval, body apterous, no humeral umbone . scutellaris.
Elytra oblong, body winged, humeral umbone distinct . 1.
1. Elytra with rows of tubercles very distinct and toinentose . . 2.
Elytra with rows of tubercles much less distinct, never toinentose . 3.
TRANS. AMER. ENT. SOC.
(1)
JNAUARY, 1874.
o
G. H. HORN, M. I).
2. First joint of antennre with dark brown hairs; club dark . SCSlbrOSll**.
First joint with rufous hairs; club rufous or cinereous . 4.
4. Elvtral tubercles round, their entire surface tomentose . monachus.
Elvtral tubercles oblong, the anterior portion of each glabrous . aspor.
3. Sides of thorax near the hind angles rather deeply incised ; elytra not dis¬
tinctly tuberculate . . suberosus.
Sides of thorax not or very feebly incised; elytra with well marked rows of glabrous tubercles . pnnctalus.
These species have a facies totally different from those of the next group arising principally from the form of the thorax as well as its sculpture. The base of the thorax here is always subpedunculate and consequently near the sides is always distant from the base of the elytra, the hind angles are always obtuse and the margin in front of them either with a well marked incisure or a feeble sinuation. These characters are entirely absent in the next group and even in those species in which the base of the thorax is deeply sinuous on each side (Sananr, tnberru/at us, etc.), there is no space between the base of thorax and elytra, when in the normal position.
T. scutelliiris. Say, Journ. Acad., 1S23, p. 23S ; Lee. Proc. Acad., 1854, p. 214; Coleop. Kansas, pi. 1, fig. 4; tevanns, Lee.; mtu.ralis, Lee.; umbonatus, Lee. loc. cit., p. 214 ; Harold, Col. Hefte, ix., x. p. 56.
By the characters already mentioned this species may be readily known. The three synonyms above cited all indicate well marked varieties which appear to lead insensibly from one to the other.
Var. texnnus , Lee. — The largest form. Elytra broadly oval and with rows of tubercles closely placed longitudinally, but with moder¬ ately well marked intervals between the rows. Sides of thorax near the base with a slight sinuation.
Var. scut llaris, Say. — Elytra rather less broadly oval. Tubercles more distinct, Hatter, not confluent longitudinally but with well marked intervals between them and without any intervals between the rows. Sides of thorax entire.
Var. sutural is. Lee. -Tubercles more convex and exhibiting a tenden¬ cy in the rows to alternate with larger and smaller tubercles, which are, however, closely placed longitudinally and laterally. Sides of thorax entire.
Var. umbonatus , Lee. — Elytra distinctly more oblong. Rows of tubercles decidedly alternating, the tubercles rather closely placed but of irregular polygonal form. Sides of thorax entire. The thoracic sculpture consists of four oval tubercles usually smooth and shining, placed along the basal margin, the central pair somewhat larger; in front of the outer basal tubercle is another of smaller size and less
AMERICAN COLEOPTERA.
3
regularly oval ; in front of the median pair of tubercles an irregular figure resembling the letter “k,” the vertical line being toward the middle and the bottom of the letter toward the front. This latter figure varies somewhat, but the sculpture as above described is that which is characteristic of the entire group. The space between these elevated portions Js opaque and clothed with a cinereous or luteous indument, as is also the space between the elytral tubercles.
With the known variation of punctatus and suberosus, as shown by the large series before me, I cannot see that any of the above men¬ tioned forms are entitled to rank as species.
Varies greatly in size. Length .60 — .80 inch; 15 — 20 mm.
Occurs in Texas, New Mexico, Kansas and also in Mexico.
T. scabrosus, Beauv. Ins. p. 175, pi. 4b, tig. 4; Lee. Proc. Acad., 1854, p. 215 ; Harold, loc. cit. p. 100.
The surface of this species is almost always concealed by a brown¬ ish opaque coating. The thoracic sculpture is a modification of that described in scutellaris, having the basal tubercles more elongate and coated as the remainder of the surface; the “ k ’’-shaped figure is also less distinctly marked. The sides of thorax are rather irregular and near the base deeply notched, the hind angle being in the form of a rounded lobe. The base of thorax is rather acutely lobed at middle. The elytra are oblong in form and with moderately elevated oblong tu¬ bercles having a tomentose summit. Between the rows of larger tuber¬ cles is a secondary series of smaller size and less elevation, also tomen- tose at top and on each side of these secondary tubercles a row of round¬ ed granular elevations, while the surface between all these elevations is nearly smooth. The basal joint of the antennae, the labrum and mandibles are clothed with stiff brown hair and the club of the an¬ tennae is of sooty color.
The presence of the triple series of tubercles in this species affords an easier method of distinguishing it from the two following than the color of the hairs of the basal joint of the antennae. The median tooth of the anterior tibiae is also more distinct. Length .60 — .70 iuch ; 15 — 18 mm.
This species occurs in nearly the entire region east of the Missis¬ sippi river and south of the lakes, but is much more abundant in the Gulf States.
T. monachiis, Ilerbst, Kafer, iii. p. 25, pi. 21, fig. 7; Harold, loc. cit. p. 116; tuberculatus || Beauv. Ins. p. 175, pi. 4b, fig. 3; pustulatus, Lee. Proc. Acad. 1854, p. 215.
4
a. H. HORN, M. D.
More oblong and of less robust facies than the preceding species The thoracic sculpture is similar and the entire surface of body simi¬ larly invested. The notch near the hind angles is nearly as deep as iif ucabrosus, but the angular lobe less prominent, while the sinuation of the base immediately within the angle is much more pronounced. The elytral sculpture consists primarily of five series of tubercles (of which the sutural is smaller) of more or less oval form rather distantly placed and in each row alternating with the next, and at their summits tomentose. The spaces between the tubercles are finely hut sp irsely granulate. At the apical fourth of the elytra one of the tubercles of the third series is much larger, and on the fourth and fifth series a similarly enlarged tubercle but of less size than that of the third. This character is scarcely evident in scabrosm and much less distinct in asper than in the present species.
The hairs of the basal joint are very pale brown, and the antennal club rufous. Length .50 — .64 inch.; 13 — 16 mm.
In very well preserved specimens it will be noticed that certain individuals have the spur of the anterior tibiae straight, and others very distinctly arcuate near the tip. This appears to me to afford the means of distinguishing the sexes, the former being females and the latter males ; as the spurs are almost always more or less worn the character becomes as useless for the determination of the sexes as is the knowledge acquired by its presence.
Occurs in the Southern States and also west of the Mississippi from Kansas to Texas.
T. asper, Lee. Proc. Acad. 1854, p. 215 ; Harold, loc. cit. p. 118.
The notch at the side of the thorax is less deep than in the preced¬ ing two, the angular lobe less promineut and the sinuation within it less marked than in moncichus. The elytral tubercles are here elong¬ ate and closer together, and their summits tomeutose except a glabrous space at the anterior portion of each. In the interval between the rows of large tubercles may be seen a row of small tubercles, on each side of which is a row of moderately deeply impressed punctures. The an- tenurn are similar to those of monnehus, but the club is somewhat darker.
This species is somewhat smaller than the preceding, being rarely longer than .50 inch ; 13 — 14 mm.
Occurs with the preceding.
The following species have the tubercles much less elevated, of oval
AMERICAN COLEOPTERA.
5
or rounded form and never tomentose at tip, but smooth and shining. The sculpture of both species is extremely variable, and has caused them to be unnecessarily divided.
T. suberosus, Fab. Syst. Ent. p. 31 ; Harold, loc. cit. p. 119: crenatus, Oliv. Ent. 1,4, p. 7, pi. 1. flg. 4; Beauv. Ins. p. 17fi, pi. 4b, fig. 6; denticulatus J Beauv. loc. cit. fig. 7, 8; alternatus, Say, Bust. Journ. 1, p. 179; punctatus % Lee. Journ. Acad. 1854, p. 215.
This is the species so long known in our cabinets under the latter name.
The thoracic sculpture is similar to that of monachus , but the tuber¬ cles are much less elevated and less distinctly marked. The sides of thorax are rounded and the emargination in front of the hind angles broad and not nearly as deep as in monachus , etc. The elytral tuber¬ cles, even in the best marked specimens, are of but slight elevation, and between them are slight tomentose patches. The intervals are biseriately punctured. There is scarcely any trace of subapical um- bone. Length .40 — .66 inch ; 10 — 17 mm.
Varieties occur with scarcely any elytral tubercles, the only sculp¬ ture remaining being the punctures, and in which the surface coating is entirely absent so that the specimens are black and shining.
I have specimens before me from every section of our country ex¬ cepting California and the region to the north. It occurs in the Pen¬ insula of Lower California and thence southward to Patagonia.
T. punctatus. Germ. Ins. Spec. Nov. p. 113; Harold, loc. cit. p. 124; mor- sus, Lee. Proc. Acad. 1854, p. 216; var. integer, Lee., var. tesselatus, Lee. loc. cit.
The thoracic sculpture is much more distinctly marked than in any of the forms of the preceding species, and in fact approaches more nearly that of scutellaris, not onl}r in form but also in the glabrous summits of the tubercles. The elytral tubercles are oval, moderately elevated, with tomentose space between them, and placed at a distance from each other greater than the size of the tubercles. The sculpture is of course somewhat variable and several varieties may be noted.
Var. integer , Lee. — Sides of thorax with scarcely any evidence of the notch near the hind angles. Elytral tubercles forming five princi¬ pal series, between which are smaller tubercles not very evident, and the intervals slightly wrinkled.
Var. morsus, Lee. — Sides of thorax posteriorly feebly notched. Elytral sculpture similar to that of integer.
Var. tesselatus , Lee. — This is the larger form, and its general aspect resembles scutellaris. The sides of the thorax have a mere trace of
6
G. n. HORN, M. D.
notch. The tubercles of the elytra are moderately elevated, smooth and shining and those of the secondary series are nearly as conspicu¬ ous as those of the primary.
As in suberosus the sub-apical nmbone is reduced to a minimum.
The leugth varies from .48 — .()(> inch; 12 — 17 mm.
Occurs in the southern Atlantic and Gulf States, Kansas, New Mexico, Arizona, Peninsula California, California and Mexico.
Group II.
The species of this group are all smaller than tho. c of the preced¬ ing, and some of them are even below the medium size. The varia¬ tions of the thoracic sculpture will be noted in the remarks on the several species.
The tip of the prosternum behind the coxte varies in form, and has been made use of by Harold with success in his synoptic table. The tip may be spiniform, sub-cariniform or entirely flat. The hind femora may have their upper posterior margin either spinulose or sim¬ ple, and in accordance with the presence or absence of these char¬ acters the main subdivisions of the table are formed.
Prosternum at tip spiniform ; bind femora spinulose . 14.
Prosternum not spiniform, sometimes subcarini form or slightly promi¬
nent . . 4.
1. Hind femora spinulose along the posterior margin . 2.
Hind femora not spinulose . . . *5.
2. Thorax with median sulcus limited on each side by an obtuse ridge . 4.
Thorax not sulcate ; elytra not tuberculate . 4«».
4. Elytral tubercles with erect set«e; median sulcus usually entire.
tuberculatus.
Elvtral tubercles squammulato-pilose ; median sulcus usually inter¬ rupted . *•
5. Elytral margin strongly serrulate; tubercles cristiform, those of the second
and third rows continuous at basal half. . gemniulatus.
Elytral margin feebly serrulate; tubercles feebly elevated, usually nearly
flat at the posterior declivity . Sonora*.
3. Elytral tubercles with black setfe . <>•
Elytral tubercles with rufous or pale hairs or scales . 7.
6. Tubercles elevated, sette erect, moderately long . erinacens.
Tubercles scarcely evident, setie very short . rapillaris.
7. Elytra with rows of tubercles or with patches of scales or set* replacing
them . .
Elytra without tubercles, surface with coarsely punctured strise . 1<».
8. Elytra distinctly tuberculate; thorax with well marked ridges . 9.
Elytra not tuberculate, the tubercles replaced by patches of set® . 10.
9. Thorax sulcate at middle, the median ridges straight . 11.
Thorax bifoveate, the ridges very sinuous . 12.
11. Elytral margin at base entire . unistriatiis.
AMERICAN COLEOPTERA.
Elytral margin at base erenulate or serrulate . sordidus.
12. Tubercles of elytra with erect brownish setae . foveicoll Is.
Tubercles squammulose, scales pale rufous . terrestrial
10. Anterior tibiae above the lateral tooth simple . sequalisl
Anterior tibiae above the lateral tooth serrulate
13. Ely tral intervals equal; pubescent spots small, round and distant; hind
tarsi short, joints 2, 3, 4 not longer than wide . fusel for.
» Elytral intervals slightly alternating, pubescent spots longer; hind tarsi with joints 2, 3, 4 distinctly longer than wide . soaher.
14. Elytral intervals with a single row of short erect setae ; anterior tibi* bi-
dentate externally and erenulate near the base . alrox.
15. Elytra black, shining, intervals flat with very slight elevations, each bear¬
ing a single short seta; hind tarsi slender . laticollis.
16. Elytra black, shining, intervals moderately convex, very sparsely punctu- late and with sparsely placed, extremely short setae; stria; coarsely punc¬ tured ; anterior tibiae feebly bidentate externally ; hind tarsi rather
short..
striatus.
The above table is considerably changed front that of Harold, al¬ though based on it. The first change that will be noticed is in the position of erinaceus . I have associated it with capillaris front the entirely dark, nearly black, scale-like hairs which tip the tubercles. AH the following species have the hairs so much lighter in color that contrast in the table is better preserved by the change.
In order to avoid the use of characteis drawn fr. ut t ie length of the hind tarsus as compared with the middle tibia, L have used the thoracic sculpture as a basis, and from it arrange the species in such sequence as appears the most natural from their general aspect. The gradual obliteration of thoracic, and change ot elytral sculpture are thus shown. Ot the last five species four were unknown to Harold.
T. tiibevciilatus, Degeer, Mem. Ins. iv., p. 318, pi. ID, fig. 2; Oliv. Ent 1, 4, p. 9, pi. 2, fig. 8; Hbst. Kaf. iii., p. 23, pi. 21, fig. 6 ; Lee. Froc. Acad’ 1854, p. 212; Harold, loc. cit. p. 155; serrulatus, Beauv. Ins. p. 176, pi. 4b. fig 9; canali- cv.htlus, Say, Long’s Exped. App. ii., p. 278.
Form oblong. Clypeus rotundato-angulate. Head punctured, vested with four small tufts of hair sometimes forming a transverse continuous line. Antennae rufous. Thorax narrower in front, sides moderately arcuate, base on each side moderately sinuate ; median sulcus limited by an entire ridge on eacdi side, rarely interrupted at middle by a transverse elevation. Elytra with rows of moderately dis¬ tinct, feebly elevated, tubercles with brownish suberect scale-like hairs ; intervals with much smaller tubercles. Prosternal process elevated in an obtuse ridge. Anterior tibiae with one small marginal tooth and above it subserrate. Posterior femora spinulose along the hind margin. Length .36 — .40 inch; 9 — 10 mm.
Occurs from Pennsylvania to Arizona and Kansas.
8
G. n. HORN, M. D.
T. Keiiiiiiulntus, n. sp.
Oblong, moderately robust. Clypeus obtusely rounded, bead coarsely punctured. Antennae dark brown, club fuliginous. Thorax more than twice as wide as long, sides moderately arcuate, disc longi¬ tudinally sulcate, sulcus interrupted at middle. Sutural row of tuber¬ cles small, the others strongly elevated, each tubercle elongate, those of the second and third rows forming a continuous ridge at basal third, at summits with short, pale rufous scales. Elytral margin serrate in in its entire extent. Prosternal process in form of an elongate tuber¬ cle. Ilind femora spinulose posteriorly. Anterior tibiae serrate at base, unidentate below the middle of the outer margin. Length .40 — .44 inch ; 10 — 11 mm.
The facies of this species is such that it never would be confounded either with tuberculatus or Sonorse, being more robust, with broader thorax and and with its tubercles strongly elevated, much more so, in fact, than in any species in our fauna.
Specimens have been sent me by Mr. H. Edwards, of San Fran¬ cisco, collected at San Diego. This species has been long known to us under the above name in the cabinet of Dr. Leconte.
I cannot find that it has been described, and I retain the name under which we have known it to avoid confusion.
T. Sonors©, Lee. Proc. Acad. 1854, p. 211 ; alternam || Lee. loc. cit. p. 212; Lecontei, Harold, loc. cit. p. 156.
This species closely resembles tuberculatus , and differs in having the elytral tubercles less elevated and covered with short, pale rufous scales. The intervals have smaller tubercles, less evident at middle and also a double row of punctures, and near each puncture two small granules. Elytral margin finely serrate. Prosternum, anterior tibiae and pos¬ terior femora as in tuberculatus. Length .32 — .40 inch; 8 — 10 mm.
I cannot find that T. Sonorse, differs at all from that which we have known as alternans, and therefore drop the latter name (being preoc¬ cupied) and also that which Harold has given in its stead.
Occurs in Kansas, Texas and Arizona and the adjoining regions of Mexico.
T. crinacciis, Lee. Proc. Acad. 1854, p. 212 ; Harold, loc. cit. p. 180.
This species resembles tuberculatus very closely but is rather more robust in form. The clypeus is more distinctly angulate at middle and the front with two setigerous spots. The median sulcus is feebly interrupted. The elytral tubercles are feebly elevated but clothed at summits with erect black setae, the intervals have smaller tubercles
AMERICAN COLEOPTERA.
9
scarcely evident at the disc and small granules irregularly disposed. The prosternal process is slightly impressed at middle. The hind femora are mutic. Anterior tibiae finely crenulate at base and with a small tooth slightly below the middle. Length .25 — .28 inch ; 6 — 7 mm.
Occurs in New Jersey, Illinois, Georgia, Indian Territory.
T. capillaris. Say, Jouru. Acad. 1813, p. 238; Harris, Trans. Hartf. Soc. 1837, p. 77; Lee. Proc. Acad. 1854, p. 212; Harold, loc. cit. p. 170.
Oblong oval. Clypeus broadly arcuate. Sides of thorax feebly arcuate, gradually wider to base, median sulcus feeole but entire. Elytral tubercles feebly elevated, at summits tomentose with black, tubercles distant and small, intervals with smaller tubercles, scarcely evident at the sides, suture slightly elevated. Prosternum at tip slightly elevated. Anterior tibiae unidentate externally \nd very fee¬ bly serrate. Length .36 — .44 inch; 9 — 10 mm.
Occurs from Canada to Texas and Kansas.
T. unistriatus, Beauv. Ins. p. 175, pi. 4b, fig. 5; porcatus, Say, Journ. Acad. 1825, p. 193; Lee. Proc. Acad. 1854, p. 212; Harold, loc. cit. p. 173.
Elongate ovate. Clypeus rounded. Thorax transversely quadrate, sides feebly arcuate, hind angles rectangular, median sulcus feeble, entire. Lateral margin of elytra entire, tubercles very feebly elevated, elongate and bisjriately squammulato-pilose, intervals with very small pilose spots, and biseriately punctured, punctures large but shallow. Antennae rufous. Anterior tibiae with obtuse marginal tooth and at base feebly serrate. Hind femora not spinulose. Length .40 — .48 inch ; 10 — 12 mm.
The form of this species is very nearly that of the preceding.
Occurs from Canada to Georgia.
T. sordidus, Lee. Proc. Acad. 1854, p. 211; Harold, loc. cit. p. 177.
This species recalls the form and aspect of tuberculatus. The me¬ dian sulcus of the thorax is feebly interrupted and the costae are sinu¬ ous, the hind angles are subacute. The elytral sculpture is nearly that of tuberculatus , but the scales at the summits of the tubercles are much paler. The elytral margin, especially at base, is serrulate. The tip of prosternum is an acute tubercle. The hind femora mutic. The anterior tibiae above the marginal tooth finely serrulate. Hind tarsi shorter than the middle tibiae, joints 2, 3, 4 longer than wide. Length .24 — .32 inch; 6 — 8 mm.
Occurs from Canada to Georgia and Kansas.
TRANS. AMER. ENT. SOC.
(2)
JANUARY, 1874.
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G. II. HORN, M. D.
T. foveicollis, Harold, loc. cit. p. 181.
Ovate. Clypeus at middle subangulate, head obtusely 4 tubereulate. Sides of thorax irregularly arcuate, base narrowed, disc with median ridges strongly sinuous, approximated at middle, united with a trans¬ verse ridge, dividing the sulcus into two foveac. at base, on each side an elongate elevation joining the middle of the median ridges and en¬ closing a fovea, along the apex on each side a transverse fovea. Ely- tral tubercles moderately well developed and at their summits erect scale-like setae, intervals with a very few smaller tubercles, punctato striate and somewhat rugulose. Prosternal process subacute. An¬ terior tibiae with small marginal tooth near the angle. Hind femora mutic. Prosternal process in form of an acute tubercle. Length .20 — .24 inch ; 5 — 6 mm.
The middle and hind tibiae have a slight tooth on the outer margin near the middle tipped with several short spinous hairs.
I have before me a specimen that purports to be typical, bearing the label in the writing of Harold, which does not, to my mind, agree with that author’s description and in fact is merely a specimen of terrestris and which l)r. Leconte informs me was the subject of dis cussion at the time it was received by him from that author.
In their superficial aspect fuveicollis and terrestris differ nearly as much as erinaceus and sordidus , for while the former in each case has erect scale-like setae, the latter has short scales scarcely at all erect.
Occurs in Illinois, Missouri and Kansas.
T. terrestris. Say, Journ. Acad. 1825, p. 192; Lee. Proc. Acad. 1854, p. 212 ; Harold, loc. cit. p. 179.
This species and the preceding, as may be inferred from the above remarks, are very closely allied, and the only points of difference are that the tubercles in the present species have short scales, the sides of thorax less rounded, more decidedly convergent in front and scarcely at all narrowed at base. The large majority of the specimens are also smaller than those of the preceding species varying in length from .20 — .24 ; 5 — -6 mm.
Occurs in New Jersey, Pennsylvania aud the Gulf States, very rarely west of Ohio.
T. scqunlis, Say, New Spec. Ins. Louisiana, p. 5, 1832; Ain. Ent. edit. Lee. i., p. 301 ; Lee. Proc. Acad. 1854, p. 213; Harold, loc. cit. p. 185.
Form elongate sub-ovate. Clypeus rounded, head densely punctured and with a line of rufous setae in form of an inverted “ w.” Sides of thorax moderately and equally arcuate, hind angles nearly rectangular,
AMERICAN COLEOPTERA.
11
dorsal sulcus very feebly impressed. Elytra punctato-striate, intervals leebly convex and with very feeble tubercles tipped with rufous scales in a double series. Prosternal process rarely in the form of an acute tubercle, usually longitudinally cariniform. Ilind tarsi moderately long, the joints 2, 8, 4 longer than wide. Lateral tooth of anterior tibiae very small, above which the tibiae are simple. Length .24 — .26 inch ; 6 — 6.5 mm.
This species occurs from Canada to Louisiana.
T. fascifer, Lee. Proc. Acad. 1854, p. 213.
This species closely resembles the preceding. The thoracic sculp¬ ture is still more obliterated. The elytral tubercles are obliterated and their places supplied by small, round, very regularly placed patches of rufous scales. The hind tarsi are short. The anterior tibiae bidenticulate externally and serrulate at base. Length .26 inch ; 6.5 mm.
The patches of scales are of equal size on all the intervals.
Occurs in California.
T. scafoer, Linn, Syst. Nat. edit, xii., p. 573; Harold, ioc. eit. p. 183; variolatus, Mels. Proc. Acad. 1846, p. 138; Lee. Proc. Acad. 1854, p. 213.
Closely allied to sequalis. The thorax is similar in form and sculp¬ ture. The elytra have the intervals slightly alternating, the tubercles very feeble and tipped with rufous scales biseriatelv arranged, the tubercles on the more convex intervals being more elongate and con¬ spicuous than those of the alternate intervals. The hind tarsi are elongate. The anterior tibiae bidenticulate near the tip on the outer margin and serrulate near the base. Length .20 — .28 inch ; 5 — 7 mm.
This species occurs in every quarter of the globe. In our own fauna it occurs from Canada to Texas. The European synonymy has been omitted for obvious reasons.
T. atrox. Lee. Proc. Acad. 1854, p. 214,
This species recalls in its outline capillaris , but is much less convex. Clypeus rounded. Thorax similar in form to unistriatus, sides moder¬ ately arcuate in front, slightly sinuate at base, hind angles acute, sur¬ face sparsely punctured, discal channel entirely obliterated excepting a slight impression in front of the scutellum. The elytra have broad shallow striae, the edges of which are slightly raised and with trans¬ verse punctures not closely placed; the intervals are feebly convex and with a row of small punctures moderately closely placed, each bearing a short erect brownish hair. Hind tarsi elongate. Anterior
12
G. n. nORN, M. D.
tibiae bidentate externally tbe larger tooth median, one more basal smaller and with tbe margin near the base crenulate. Prosternal tip spiuiform. Hind femora spinous along the posterior margin. Length .32 inch ; 8 mm.
The prosternum of this species is distinctly spiniform in well pre¬ served specimens, but in the type is scarcely less prominent than in terfestris , etc. Its aspect is that of the species with which it is placed, although the surface is entirely without coating as in the two follow¬ ing. It may at all times be known from any of our species by the uniseriate arrangement of the short spinulose hairs of the elytral in¬ tervals.
Specimens are known to me from Kansas and Illinois.
This species is evidently closely allied to Ever&manni of Europe.
T. latieollis. Lee. Proc. Acad. 1854, p. 213.
Form nearly that of f equalis, but very slightly broader. Surface black, shining. Clypeus rounded, head sparsely but moderately coarsely punctured. Thorax more than twice as wide as long, sides moderately arcuate and very feebly sinuate near the hind angles which are rectangular, surface shining, coarsely punctured, dorsal sulcus ob¬ literated except a feeble ante-scutellar impression. Elytra black, shining, punctato-striate, intervals equal, nearly flat, with slight ine¬ qualities not amounting to tubercles, each bearing two or three short, erect brownish spiculae placed in a transverse row. Prosternal tip feebly convex. Ilind tarsi moderately long. Anterior tibiae feebly trideuticulate on tbe outer edge. Length .2(5 inch; 6.5 mm.
The slight inequalities which, in this species, replace the elytral tubercles of others appear to be rather trausverse folds and are moder¬ ately distantly placed. The appearance of this species is totally unlike anything in our fauna.
One specimen, New York.
T. striutus, Mels. Proc. Acad. 1846, p. 137; Lee. Proc. Acad. 1854, p. 213.
Black, shining. Sides of thorax feebly arcuate, posteriorly not sinuate, bind angles rectangular; disc moderately densely punctured, median sulcus obsolete. Elytra black, shining, deeply striate, striae coarsely and moderately closely punctured, intervals convex and with fine punctures placed in pairs, which bear very short pale setae. Hind tarsi rather short. Anterior tibiae finely bidenticulate externally and serrulate at base, apical angular tooth deeply emargiuate. Tip of prosternum in form of a short carina. Leugth .24 inch; 6 mm.
One specimen, Pennnsylvania.
AMERICAN LEPIDOPTERA.
13
Descriptions of New Species of DIIJRML LEPIDOP¬ TERA found in North America.
BY W. H. EDWARDS.
•Argynnis Rhodope, n. sp.
Primaries of median width, moderately arched, straight on hind margin.
Male. — Expands 2.2 inches. Upper side deep red fulvous, the basal portion of both wings up to the mesial band dark brown ; hind margins bordered by two heavy parallel black lines, which enclose fulvous spaces between the nervules ; on primaries these lines are frequently conflu¬ ent, then forming a broad band ; the submarginal black spots lunular, confluent, resting on the marginal lines throughout and enclosing sub- ovate fulvous spots; the other markings on primaries as in allied species, but heavy, very much as in A. Monticola ; secondaries have submarginal black spots equal in size to those on primaries ; the mesial band narrow, confluent; the black discal spot oval, with a narrow, deep, fulvous sinus; beyond to base the ground is black in the cell and for some distance on either side of cell, covered by partially brown scales, and on this, next anterior to the mesial band, in the upper discoidal interspace, is a long fulvous spot, and on the sub-costal interspace a second, smaller,'; fringes alternately luteous and black, the black pre¬ vailing on primaries.
Under side of primaries deep red along the whole hind margin quite up to the line of rounded spots; sometimes the basal portion up to the mesial band is of same hue, but iu other cases it is paler; the sub-costal and discoidal interspaces as far as the red marginal space being yellow, as is also the posterior part of cell ; the sub-mar¬ ginal black spots diffuse, the lower ones produced nearly to the rounded spots; the enclosed spots small, triaugular, rather lunular next inner angle, and the upper five or six either yellow with a few silver scales, or well silvered ; on costal margin three sub-apical spots, either yellow or silvered.
Secondaries uniform deep red from base to margin, except that sometimes there is a narrow pale space between the two outer rows of spots, as of a yellow sub-color, washed with red ; in some cases the middle of the wing, next anterior to the second row of spots, is much covered with black ; the marginal spots well silvered, narrow, elongate, lunular posteriorly, the others sub-ovate; the spots of the second row are nearly equal in size, excepting the fourth, which is minute; the first three, the fifth and sixth, sub-quadrate, the seventh a paral-
14
W. H. EDWARDS.
lelogram, the eighth, on the margin, nearly or quite obsolete ; all heavily edged above with black ; these spots either well silvered <>r yellow- white sprinkled with scales of silver; in the third row are five similar spots, the first, fourth and fifth nearly equal, Innate, the second a point, sometimes wanting, the third sub-triangular edged posteriorly by black; all heavily edged above with same color; in the cell a small rounded spot, and at the base of median nervure an oval, both ringed with black; patches of silver at base of cell, at origin of sub¬ costal, and on shoulder; abdominal margin very lightly silvered; body above black covered with brown-fulvous hairs; beneath light fulvous, abdomen buff; legs fulvous; palpi fulvous, buff at base, at the sides black hairs; antennae fuscous above, ferruginous below; club black, ferruginous at tip.
Femme. — Expands 2.4 inches. Upper side of a pale fulvous, ob¬ scure at base; markings similar to male but the sub-marginal fulvous spots paler than the ground color; under side as in the male.
From 3 £,1 9 , taken in British Columbia, in 1873, by G. B. Crotch, Esq.
Satyrus I'liocus, n. sp.
Male. — Expands 1,6 to 1.8 inch. Upper side uniform brown, of medium color ; primaries have one small black ocellus in upper dis- coidal interspace, sometimes in a narrow yellowish ring, and with a white central dot, but in most cases this last is wanting, and the ring represented by a pale shade of brown, and sometimes is altogether wanting; occasionally there is a second ocellus, smaller than the other in lower median interspace, black without pupil.
Under side of primaries much the same shade as above, sometimes tinted with yellow; of secondaries rather darker brown than above, es¬ pecially over the basal half of the wing; hind margin preceded by a dark common line often obsolete; both wings reticulated with fine, abbreviated, darker brown lines and streaks ; the ocelli on primaries re¬ peated, enlarged, with small white pupils and well defined yellow irides; secondaries have two minute black spots, scarcely more than points, one in upper discoidal, the other iu lower median interspace, each with white dot; traces of such a spot are sometimes seen in sub¬ median interspace.
Body con-colored ; legs yellowish; palpi fuscous; antennte fuscous above, cretaceous below; club fuscous, ferruginous at tip.
Female — Unknown.
AMERICAN LEPIDOPTERA.
15
From several males taken at Lake Labache, British Columbia, by G. R. Crotcb, Esq., in 1873.
This species is of the size of small Nephele, and is plainer colored and with fewer spots. In same vicinity were taken specimens of <$f. Boopis, Behr. Also of Colins Philodice , and Argynnis Aphrodite. , neither of which have been known by me hitherto from the Northwest coast. Also one specimen of Vanessa J album, and three females of a Colias , probably Scudderii , Reakirt; specimens of Arg. Chur idea, or Boisduvalli , considered by some to be a dark var. of Charidea. On Bald Mountain near Lake Labache were taken diminutive specimens of Argynnis Bisckojjii, Edw., hitherto reported only from Kodiak. Near Lake Labache also were taken Arg. Bremneri , Edw., as well as at Victoria, Vancouver’s Island. On this Island a fine specimen of Chionobas Gigas , Butler, was taken, and specimens of Calms Interior , Scudder. Among the Pieridse , taken by Mr. Crotch, were Pallida , Scudder (Syn. Castoria , Reakirt), and Venosa, Scudder, probably syu. with Yreka , Reakirt. Also Oleracea ; all these from Lake La¬ bache.
Argynnis Xitocrls, n. sp.
Male. — Expands 3 inches. Upper side bright fulvous, much ob¬ scured by brown from base to middle of disk, except upon a portion of cell of primaries; both wings edged by two parallel, fine, black lines, which on secondaries enclose a rather broad fulvous space, on prima¬ ries a narrower space, divided by the black nervules; anterior to these lines on primaries a series of black lanceolate spots, the three or four next apex connected and resting upon the inner line, the others separated and not touching the line; on secondaries a series of lunu- lar separated spots; the rounded extra-discal spots as in Nokomis ; small on secondaries, rather large on primaries; the markings on disk and to base as in Nokomis , heavy on primaries, light on secondaries, the discal band on the latter broken into small, separate lunules; the spot on the arc like the letter S; fringe of secondaries light fulvous, of primaries deep fulvous, black at tips of nervules.
Under sider of primaries ciunamon-red from base to hind margin and over entire wing except a small sub-apical space aeross the sub¬ costal nervules, which is bright ochraceous-yellow, and a brown patch just anterior to this on costal margin; the black markings repeated; the five lanceolate spots next apex enclosing silver lunules; three silver spots on the brown costal patch, one of them minute.
16
W. n. EDWARDS.
Secondaries deep ferruginous from base to outer ed'jje of the second mw of spots; between this and the outer row, a clear space, as in Ci/bele, bright ochraceous-yellow ; the seven sub-marginal spots nar¬ row segments of circles, edged above with ferruginous; the second row seven, rather small, the 1st, 2d and 6th equal, sub-rotund; the 3d and 5th long oval; the 4th minute and 7th sub-lunate ; all heavily edged above with black ; the third row of three large spots, the 1st and 3d sub-lunate, the 2d rounded; edged above with black; in cell a round spot, and below cell an oval, both ringed with black ; all these spots well silvered ; a silver patch at base of cell, and another at base of sub-costal; shoulder and abdominal margin lightly silvered.
Body above fulvous, beneath fulvous with buff and gray hairs; legs fulvous; palpi fulvous, buff at sides; antennae fuscous above, fulvous below; club black, tip fulvous.
Female. — U nknown.
From one male taken at White Mountains, Arizona, by Lieut. Hen- shaw of the exploring Expedition under Lieutenant Wheeler, Au¬ gust, 1873.
Mi4i(a>a Acastus, n. sp.
Male. — Expands 1.5 in. Size and form of M. Pallet) paler fulvous ; the spots and bands closely like that species, and on a fuscous ground; fringes similar also.
Under side of primaries pale fulvous, reddish next base and across the disk next the submarginal spots, yellow fulvous at extremity of and below cell, and along the origin of the nervules; a fuscous patch on middle of inner margin, and four fuscous, rounded spots forming a bent oblique line reaching from costal edge to median nervule ; hind margin edged by a narrow fulvous band, slightly wavy on iuuer edge ; submarginal spots large, lanceolate, yellow-white, the three next inner angles suffused with fulvous; the three sub-apical spots yellow-white on fuscous ground; costal edge yellow-white.
Secondaries nearly covered with large yellow white spots, in bands, separated by fuscous lines; the marginal edge bordered as in prima¬ ries; tbe submarginal spots lunular, the spots of second row small, sub-rectangular, and each except the two outer having a miuyite orange spot near its posterior edge, sometimes represented by a few scales only ; the spots of the 3d, or discal row, long, conforming to the interspaces, almost a continuous band, the nervules that divide them
AMERICAN LEPIDOPTERA.
17
being but partially fuscous ; the anterior portion of these spots, on both margins, cut off by an irregular black line; the 4th row is basal and is separated from the 3d by a broad space, and consists of four irregu¬ lar, confluent spots ; the outer edges of the band thus formed edged with black ; the 4th spot confluent with the con-colored abdominal margin; in cell an orange bar on either side the triangular spot; a similar bar in the interspace above cell, and an orange lunule in sub¬ median interspace next submedian nervure, and a small orange trian¬ gle at origin of lower branch of median ; an orange bar also next the basal side of the 4th band. Body above black with fulvous hairs ; rings of abdomen edged with yellow; below, thorax and abdomen, yellow-white; legs pale fulvous; palpi same above, yellow-white in front; antennae fuscous, with narrow white rings, below orange cre¬ taceous next base; club fuscous, orange below and at tip.
Female. — Expands 1.9 inch. Color of upper side sometimes like male, sometimes paler ; in some individuals the submarginal spots and the third, or discal row, are paler than the rest of the wing; and the three outer rows on primaries likewise paler; under side similar in color and markings to male.
From Montana, Nevada and Southern Utah. Specimens have been received from Dr. Hayden’s Expeditions and Lieut. Wheeler’s of 1872, Also from Henry Edwards, Esq. This species is at once distin¬ guished from its allies by the yellow-white under surface, especially of secondaries, this color nearly occupying the whole wing.
Syncltloe Crocale, n. sp.
Male. — Expands 1.7 to 1.9 inch. Upper side brownish-black, spotted with white ; primaries have a sub-marginal row of points, sometimes complete from apex to lower branch of median, but usually in part, obsolete, the two spots on first and second median interspaces only appearing; a sinuous extra-discal row of points or small spots across the entire wing, seven in all. but sometimes the one next inner margin accompanied by an eighth ; a discal row of conspicuous spots, also sinuous, usually incomplete by the absence of one spot from upper median interspace, — this spot when present, minute; and a narrow spot in cell, often wanting ; secondaries have a transverse row of spots on middle of wing, which are regular, narrow, elongated, and equal ; at anal angle a fulvous patch, which extends a little distance up the abdominal margin ; fringes white, black at tips of nervules.
TRANS. AMER. ENT. SOC.
(3)
FEBRUARY, 1874.
W. H. EDWARDS.
1R
Under side more decidedly brown; the spots on primaries repeated ; the sub-marginal enlarged, mostly lunate; the extra discal also enlarged ; the discal nearly as above; two spots in cell, one near arc, one near base; a third below the origin of lower branch of median; shoulder ferruginous ; secondaries have a sub-marginal series of yellow lunules ; a broad yellow band across disk ; a narrow yellow stripe near base, from costal edge to sub-median nervure; half-way between sub-mar¬ ginal spots and discal band, a series of yellow points, tortuous, com¬ mencing on costal margin near the band, crossing the wing in a double curve, the last point being on sub-median interspace; these marks vary from points to conspicuous spots, and sometimes are nearly or quite obsolete ; in middle of cell a yellow point ; anal spot as above, ferruginous ; the upper part of abdominal margin edged with yellow ; a yellow patch on shoulder.
Body above blackish-brown, below gray-brown ; legs ferruginous ; palpi white in front, black above and at tip ; antennae fuscous, finely annulated with white; club black above, gray below, fulvous at tip.
Female. — Expands 2.1 inches. Similar to male ; in the only speci¬ men examined, the fulvous patch at inner angle of secondaries was absent ; below cell of primaries two white points.
From several males and one female, taken at White Mountains, Arizona, in 1873. by Mr. Henshaw, of Lieut. Wheeler’s Expedition.
I submitted one of these specimens to Mr. A. G. Butler for deter¬ mination, and he informed me that two examples from Mexico were in the British Museum collection, and that they were regarded by him as a distinct species, allied to Lacinia and Hippodrome.
Geirocheilas Tritonia, n. sp.
Male. — Expauds 2.3 inches. Upper side velvety, blackish-brown, changing to brown on hind margin of primaries with an olivaceous tint at apex ; costal edge of primaries near apex yellow-white ; be¬ yond disk a transverse row of four white points, set in middle of the upper discoidal and three next lower interspaces ; the last point some¬ times wanting on upper side ; secondaries have a broad marginal band of dull ferruginous, even edged within, reaching the margin on that part of wing between sub-median nervure and the upper branch of median ; beyond this last receding from the margin, but usually con¬ tinued past the upper branch of sub-costal and gradually diminishing to a point, sometimes, however, terminating squarely at the lower
AMERICAN LEPIDOPTERA.
19
branch of same nervure; through this band runs an indistinct undu¬ lating brown line, parallel to and near the margin ; beyond upper branch of median the space between this line and margin is brown, color of apex of primaries; fringes of primaries black at tips of nervules, yellow-white in the interspaces, of secondaries nearly all fuscous, there being but a few gray hairs in each interspace.
Under side smoky-brown; the white spots repeated, enlarged three¬ fold, each forming the pupil of a rounded black ocellus ; secondaries have a broad extra-discal band, ferruginous and lilac, with scattered yellow scales, on the posterior half of wing, lilac on brown ground apically ; on the anterior edge of the band, upon small ferruginous spaces free from lilac, is a row of straw-colored points and spots, com¬ mencing in a point on the lower sub-costal interspace and continuing to sub-median nervure, just before which are two points ; the three spots on the three median interspaces crescent or V-shaped ; in some cases these larger spots re-appear on upper side ; posterior to the band, the sub-marginal area is brown, sharply lunated, each lunation forming internally a semi-circle, and through all runs a streak of ferruginous, more or less irrorated with yellow; sometimes the streak is limited to the three interspaces next abdominal margin.
Body blackish-brown ; legs brown and gray; palpi gray in front, blackish above and at tip ; antennae brown, grayish next club, gray below ; club yellowish.
From White Mountains, Arizona, and taken by Mr. Henshaw, in 1873. This species is near Patrobas , Hewitson.
Erebia Haydenii. Edw. U. S. Geo. Survey of Montana etc. 1872.
Male. — Expands 1.6 inch.
Upper side fnscous, immaculate; underside a shade paler, much irrorated with grey scales; primaries immaculate; secondaries have a complete series of black ocelli along the edge of hind margin, one in each interspace ; each ocellus narrowly ringed with ochraceous, and having a minute white pupil.
Found at Yellowstone Lake.
20
O. H. HORN, M. P.
Description* of New Species of United States COLEOPTERA.
BY GEO. II. HORN, M. D.
This short contribution to Coleopterology was begun with the in¬ tention of making known the new species brought by Mr. <>. R. Crotch, belonging to the families to which the author had more especially given attention. There being many new species in these families from other parts of the country, this opportunity has been made use of to add descriptions of these, as well as to make known some synonyms, and to present synoptic tables of several genera, in order that the species may be more readily recognized.
The attention of collectors in various parts of the country is called to the species of Corphyra. The number occurring in California alone is nearly equal to that of the entire region east of the Rocky Mountains, and this fact gives rise to the suspicion that the species of the latter region have not been properly collected and examined, owing to their great superficial resemblance.
The collections of Mr. Crotch show that, although very much has been done in the development of the Coleopterous fauna of the Pacific region, much remains to be done, especially in the smaller species, and to these the attention of collectors is particularly requested.
CYCHRUS, Fab.
t', iiiiinu*, n. sp. — Black. Head smooth, transversely moderately convex, clypeus with slight triangular impression at middle. Thorax cordate, not longer than wide, sides arcuate in front, sinuate posteriorly, hind angles rect¬ angular, surface sub-opaque, median line finely impressed, basal transverse impression deeper, margin finely reflexed. Elytra oval, slightly more nar¬ rowed posteriorly, convex, finely striate, striae with coarse, moderately deep but not close punctures. Body beneath smooth, shining, reflexed portion of elytra sparsely punctate. Length .56 — .68 inch; 14 — 17 mm.
The males of this species have the anterior tarsi with three joints dilated aud pubescent beneath, and in the group thus characterized it is allied to xtriatus and obliquus especially, differing from the former by its broader thorax and more deeply punctured elytral striae ; from the latter by the sides of thorax not being oblique. The latter species (obliquus') has not the triangular impression at middle of clypeal mar¬ gin aud has the middle portion of the head more convex. With the exception of the tarsal character of the male, this species cannot in description be distinguished from punctatus , the only noticeable super¬ ficial difference being that punctatus has the striae much less aud the
AMERICAN COLEOPTERA.
21
punctures rather more distinct. The resemblance between these two species has a parallel in another portion of the series, ventricosus and alternatus of which the females are at times very troublesome to separate.
Numerous specimens were collected by Mr. Crotch along the Santa Ana River, at Sau Bernardino, California.
HETJERIUS, Erichs.
H. tristriatiis, n. sp. — Form broadly oval, robust; color castaueous, shining; surface sparsely clothed with recumbent pubescence intermixed with moderately long yellowish hairs. Head sparsely punctured, front con¬ cave. Thorax wider than long, slightly wider at base than apex ; on each side a deep oblique groove, deeper posteriorly, dividing the surface into a diseal and lateral portions; discal division shining, very sparsely punctured; lateral portion divided again in two by a deep transverse groove, the posterior being elongate oval, smooth, shining, the anterior flattened but irregular, dilated in front, and with sparsely punctured surface. Elytra with the sub- humeral (or marginal) stria extending two-thirds the length of the elytra, first dorsal entire arched at tip toward the third, second very slightly shorter, third entire, striae deeply impressed at basal end, their outer margins being elevated. Propygidium sparsely punctured, pygidium smooth with few punctures at the sides onlv. Prosternum at tip deeply emarginate, stria extending entirely around the tip, anteriorly moderately eonsticted and at extremity truncate and perforate. Mesosternum with distinct marginal line. Metasternum and abdomen smooth, shining. Length .10 inch; 2.5 ram.
The appearance of this species is very much that of morsits , but it is smaller and relatively broader, the thoracic angles are less dilated in front although of similar aspect. The striation of the elytra is en¬ tirely different and the legs of the present species very much shorter, resembling those of our other species.
Several specimens of this species were collected by Mr. Crotch, at Calaveras, California.
PAR09IAL.ES, Erichs.
P. diffleilis, n. sp. — Oblong oval, sub-depressed, piceous, shining. Tho¬ rax and elytra moderately coarsely but not densely punctured. Elytra with¬ out traces of dorsal striae, sutural moderately impressed, extending two-thirds to base. Body beneath much more finely and sparsely punctured than above, mesosternum with entire marginal stria. Length .08 inch; 2 mm.
This species possesses characters of bistriatus and seminulum. Of the former it has nearly the form and a similar mesosterual line, and with the latter it agrees in the possession of the abbreviated sutural stria.
Several specimens collected by Mr. Crotch, Mojave, California.
Q. H. HORN, M. D.
22
NONODENDKOK, Latr.
!¥. calilornicum, n. sp. — Form broadly oval, moderately convex, black, feebly shining. Head moderately coarsely and closely punctured. Thorax less densely punctured than the head or elytra and more shining, sides very feebly arcuate Elytra subopaque, coarsely, densely and rather deeply punc¬ tured, punctures at sides denser but smaller, and with small, round tufts of short, erect yellowish scale-like hairs arranged in fine series on each elytron (those on the dorsum usually lost). Body beneath opaque. Mesosternum very coarsely punctured, abdomen more finely and sparsely punctured. Length .18 inch ; 4.5 mm.
This species is of the same form and size of our Eastern species, fmm which it differs by its more opaque and closely punctured sur¬ face and the possession of the elytra! tufts. In the latter character it resembles the transatlantic species, fasciculare, with which I have been unable to compare it.
One specimen from California, kindly given me by Mr. Ulke; others were collected by Mr. Crotch, at Calaveras, in the same State.
E»TIIES©I»IJS, Esch.
E. tricolor, n. sp. — Oblong, rufo-piceous, thorax and head rufous, elytra black, legs testaceous. Head sparsely punctured. Thorax slightly longer than wide, in front feebly arcuate, at base slightly broader, surface shining, sparsely punctured. Elytra deeply striate, striae coarsely and deeply punctured, inter¬ vals convex, irregularly biseriately punctulate and obsoletelv reticulate. Body beneath sparsely and finely punctured. Antenme and palpi testaceous. Claws broadly toothed at base. Length .22 inch; 5.5 mm.
The surface is very sparsely pubescent. The thoracic punctures are those of the coarser series, the finer intermediate punctures being scarcely visible. Differs from our other species by its color.
One specimen presented by Mr. Edw. Tatnall, Jr., by whom it was collected in Delaware.
Cardiophorus mimeticus , Horn, (Trans. Am. Ent. Soc., 1872, p. 147,) appears to be merely a male of C. Edwardsii , Horn. The former species has the humeri only red, while in the latter the exten¬ sion of that color embraces the entire elytra, except an elongate, fusi¬ form, sutural black stripe. The former name should be suppressed The determination is founded on a moderate series brought by Mr. Crotch.
EL4TER, Linn.
E. Phelpsii, n. sp. — Form of cordi/er, slightly more elongate and convex. Head black, densely punctured and opaque, sparsely clothed with short, black, erect hairs. Antennae not longer than head and thorax, joint 3 slightly longer than 2, and together not longer than 4, outer joints triangular. Thorax not longer than wide, sides in front feebly arcuate, hind angles not divergent and
AMERICAN COLEOPTERA.
23
obtusely carinate, surface densely and moderately coarsely punctured and sub¬ opaque, with short black hairs. Scutellum black. Elytra sanguineous with apical irregularly cordiform spot involving the entire apex, surface sparsely clothed with short, erect pubescence agreeing in color with the surface, feeblv striate, strim moderately coarsely punctured, intervals flat, sparsely punctulate. Body beneath black, sparsely punctured and with short, black hair. Legs black, tarsi rufous. Length .36 inch ; 9 mm.
This species is allied to cordifer and Behrensii , and differs from the former in being less depressed and the thorax more densely and coarsely punctured and opaque. In cordifer the apical spot is exactly cordiform in shape and does not attain either the lateral or apical margins, and there is also an ill-defined spot on each elytron behind the scutellum. Behrensii has the thorax shining and much more sparsely punctured and the hind angles more strongly carinate.
Specimens were collected by Mr. Crotch, at Tahoe, California. The species is dedicated with pleasure to Mr. E. L. Phelps, through whose skilled assistance Mr. Crotch was enabled to accomplish such good results.
GLYPHOJfYX, Cand.
mimeticus, n. sp. — Elongate, rufo-testaceous, sparsely pubescent. Head coarsely, deeply and densely punctured. Thorax longer than wide, sides parallel, anterior angles rounded, hind angles very feebly divergent, and with a very long carina, extending in front of the middle, very close to the mar¬ ginal line posteriorly; basal impression moderate; surface shining, sparsely and moderately coarsely punctured. Elytra slightly wider than the thorax, deeply striate, striae coarsely, deeply and closely puuctured, intervals convex, more elevated at apex, very sparsely puncticulate. Thorax beneath more coarsely punctured than above, body and abdomen more finely and densely punctured. Length .24— .26 inch; 6—6.5 mm.
lu one specimen before me, smaller in size than the other, the eighth elytral interval is very strongly elevated at tip, forming a well marked carina. This species may be distinguished from either of those proviously known by its more elongate form, more convex ely¬ tral intervals and the sexual (?) character above indicated. At first sight the species might be taken as a Horistonotus, and its resemblance to FI. Lhleni or Esthesopus humilis , is very great.
Two specimens from Texas were kindly presented by Mr. William Jiilich, of New York.
Limomus crihricollis, Horn, should be suppressed, the specimen ou which it is founded being immature and without any doubt Me/auotas long ulus, Lee., in which the serrations of the claws are barely visible, except with high power.
24
G. H. HORN, M. D.
OKSTOHKN. Lee.
O. puiietioollig, n. sp. — Form slender, surface sparsely clothed with very short pubescence. Head very densely and coarsely punctured, black ; antenn® ( $ ) longer than the head and thorax, subserrate. Thorax black, moderately shining, longer than wide, sides very feebly arcuate, hind angles slightly divergent and moderately strongly carinate and an extra-angular carina parallel with the margin, short but well defined, base of thorax bisinu- ate and opposite the scutellum deeply emarginate, the emargination obtusely toothed at middle; surface strongly convex, coarsely, deeply, moderately densely and evenly punctured. Scutellum oblong, shining, slightly impressed longitudinally. Elytra testaceous, suture and base piceous, surface moderately shining, (sutural stria alone entire), vaguely and irregularly punctured and at base with a slight humeral oblique impression. Body beneath piceous, thorax less coarsely punctured than above, metasternum and abdomen sparsely and finely punctured, shining. Legs testaceous. Length .24 inch ; 6 mm.
This species resembles tenuicodis, Rand., in form and coloration, and appears to differ only in the punctuation of the thorax, which is shinin<;, and nearly smooth in tenuicollis, while in the present species it is very coarsely, deeply and rather densely punctured.
One specimen collected by Dr. Elliot Coues, near the northern boundary of Dacota, while naturalist of the North Western Boundary Survey.
APLASTUS, Lee.
Several new species having appeared, it seems advisable to present some scheme, by which they may be distinguished, founded on char¬ acters least subject to variation. The following will serve for those at present known :
Third joint of antenna similar in size and shape to the fourth.
Antenna slender, feebly serrate, three basal joints only pilose; sides of tho¬ rax parallel, not margined, hind angles strongly divergent.
angusticollig.
Third joint of antenme always much smaller than the fourth, sometimes globu¬ lar, never triangular; antenn® with short erect hairs.
Thorax not margined.
Antennae strongly serrate, joints 2, 3 very small nearly equal, together slightly longer than half the fourth.
Elytra scarcely striate, thorax very sparsely punctate.. ..tenuiformis.
Elytra moderately deeply striate, thorax coarsely and moderately densely punctate . corymbitoideg.
Antennae serrate, joint 3 more than twice the length of 2, and together nearly as long as the fourth . speratus.
Thorax with the sides distinctly margined, at least at base.
Form slender, tarsi slender and as long or longer than their tibiae. Color ferruginous. Pubescence coarse . optatug.
Form shorter, less slender, thorax more convex, tarsi never as long as their tibiae. Color piceous. Pubescence fine . molestun.
AMERICAN COLEOPTERA.
25
A. august icollis, n. sp. — Form slender, color ferruginous, sparsely clothed with short cinereous pubescence. Head coarsely but not densely punctured, vertex slightly impressed. Eyes more prominent than the sides of thorax. Antennae feebly serrate, three basal joints only hairy, second joint small, oval, third similar to and nearly as long as the fourth. Thorax quad¬ rate or slightly longer than wide, sides parallel not margined, bind angles acute strongly, sometimes very suddenly divergent, acutely carinate, surface convex, sparsely punctured. Elytra as wide at base as thorax, elongate, feebly convex, sides very feebly arcuate, gradually narrowing to apex, surface obsoletely striate, intervals feebly convex, moderately densely punctured and sparsely pubescent. Body beneath darker than above and similarly punctate and pubescent. Tarsi slender, as long as their respective tibiae, hind tarsi some¬ what longer. Length .50 — .56 inch; 11.5 — 14 mm.
This species is the most slender of the genus and is readily known by the characters in the table.
In the terminal ventral segment several characters are plainly visi¬ ble. In those, which I take to be males, the last ventral segment has the sides slightly oblique near the tip, while the tip is feebly emarginate, in the other sex the segment is oval at tip and entire.
Numerous specimens were taken by Mr. Crotch, at San Diego, California.
A. tenuiformis. n. sp. — Form slender, color piceo-testaceous or ferrugin¬ ous, sparsely clothed with fine cinereous pubescence. Head coarsely and moderately densely punctured. Eyes not more prominent than the sides of thorax. Antenna? strongly serrate, sparsely clothed with short erect hairs, second and third joints small, globular and nearly equal in size, and together scarcely longer than half the fourth. Thorax subquadrate, slightly longer than wide, sides very feebly arcuate and slightly divergent, not margined, hind angles acute, moderately strongly divergent and acutely carinate, sur¬ face convex, coarsely but not densely punctured, median line usually feebly impressed. Elytra as wide at base as thorax, sides gradually narrowing to base, surface moderately convex, obsoletely or not at all striate, interval scabro- punctate. Body beneath more shining than above, sparsely punctulate and pubescent. Tarsi slender as in the preceding species. Length .44— .50 inch; 11 — 12.5 mm.
The males have the sides of the last ventral segment slightly ob¬ lique near the tip and the tip truncate.
The three specimens in my cabinet are from Nevada and parts of California unknown to me.
A. corymbitoides, n. sp. — Piceous, moderately shining, sparsely clothed with short, grayish silken pubescence. Head densely and coarsely punctured. Antennse strongly serrate, with short erect pubescence, joints 2, 3 small, oval, the third somewhat the larger and together not longer than half the fourth. Thorax slightly longer than wide, convex, coarsely but not densely punctured, median line feebly impressed, sides not margined, anteriorly feebly arcuate, hind angles moderately divergent, carinate. Elytra as wide as thorax, sides
TRANS. AMER. ENT. SOC.
(4)
FEBRUARY, 1874.
26
G. H. HORN, M. D.
gradually convergent, moderately convex, surface finely but rather deeply striate, striae indistinctly punctate, intervals moderately convex, moderately densely and rather roughly punctate, prosternum in front of coxae obtusely carinate. Body beneath sparsely punctate and pubescent and more shining. Length .50 inch; 12.5 mm.
The males have the last ventral segment slightly oblique at the sides and very feebly truncate at tip. The last ventral of the female is not oblique and is very slightly prolonged and oval at tip, the dif¬ ference between the two sexes in this respect is barely discernible.
By the form of the antennae this species is allied to molest us. opta- tus and tenuiformi* ; it differs from the first two by the absence of any margiual line, and from the latter by its less slender form and rather deeply striate elytra, and from all by the thorax more coarsely and densely punctured. Its form is nearly that of the male of (Jorymbites cylinri riformix.
All the species of this genus have the last joint of the antennae rather suddenly narrowed near the tip, presenting the appearance of the false joint so often seen in Ludius ; in molestus , however, this character is barely perceptible.
Specimens were collected by Mr. Crotch, at Los Angeles, California.
A. speratus, Lee. — In this species the thorax is distinctly longer than wide, the sides feebly and the hind angles more strongly divergent. The third joint of the antennae is nearly twice as long as the second, and the two together nearly equal to the fourth. The elytra are very feebly striate, the intervals sparsely clothed with short but coarse pubescence which converges from each side of the interval to the middle and forms, apparently, lines of pubescence. The tarsi are slender and as long as their respective tibiae. Length .56 — .62 inch; 14 — 15.5 mm.
Occurs at Tejou and Los Angeles, California.
The sexual characters are the same in this species as in angustuol- lu. The antennae are clothed with short erect hairs.
A. optatUM, Lee. — Thorax as long as wide; sides distinctly margined, gradually divergent to base, hind angles slightly more divergent, acutely cari¬ nate, surface moderately convex, sparsely punctate and shining. Antennae strongly serrate, sparsely hairy, third joint elongate oval, larger than the sec¬ ond, the two together equal to three-fourths the fourth joint. Elytra feebly striate, striae punctured, intervals sparsely punctate and sparsely pubescent. The under surface is sparsely and finely punctate. The tarsi are slender, the anterior four as long, the hind tarsi longer than the tibiae. Length .60 inch.
The male of this species has the last ventral segment rather deeply sinuate on each side and considerably prolonged at middle, the tip ob¬ tusely rounded.
Occurs in the Southern Coast Range and at Tejon, Califoania.
AMERICAN COLEOPTERA.
27
A. molestns, n. sp.— Piceous, feebly shining, sparsely clothed with a very fine pubescence. Head moderately densely and rather coarsely punc¬ tured. Eyes feebly prominent. Antennae serrate, sparsely hairy, second joint very small, third larger, the two together nearly equal to the fourth. Thorax not longer than wide, sides distinctly margined, very feebly arcuate, gradually divergent to base, hind angles very slightly more divergent and carinate, sur¬ face rather strongly convex, usually moderately densely punctured. Elytra finely striate, intervals moderately densely scabro-punctate. Body beneath more shining than above, moderately densely punctulate. Tarsi slender but not longer than the tibiae. Length .48 inch ; 12 mm.
The three specimens before me are probably all males. The last ventral segment has a very feeble sinuation on each side.
Collected by Mr. William M. G abb, near San Francisco, California.
MAL ACIHUS, Fab.
macer, n. sp.— Form slender. Head black bronzed, smooth and shi¬ ning, with slight frontal impression. Thorax slightly broader than lon<», smooth, very shining, large irregular discal spot black, margins pale testaceous’ Elytra scarcely wider than the thorax, surface scabrous, moderately sbinin- black, slightly bronzed, with broad testaceous vitta extending from the humerus to apex. Body beneath black, shining, legs pale testaceous, upper margin of femora and last joint of tarsi black. Lehgth .12 inch ; 3 mm
Male. Antennae black, pectinate, elytra slightly prolonged, and testaceous at tip.
Female. Antennae serrate, elytra obtuse and testaceous at tip.
Two specimens collected by Mr. G. R. Crotch, in the re-ion of Lake Tahoe, California.
sP*n*peMnis, n. sp.— Form of auritus. Head smooth, shining black- front slightly impressed. Thorax broader than long, surface very smooth and shining, black, lateral margins pale red. Elytra slightly broader at base than thorax, surface feebly scabrous, bluish, moderatelv shining. Body beneath black, shining, legs black with tinge of blue, hind' tibiae testaceous at apical half. Length .18 inch ; 4.5 mm.
Male. Antennae black, joints 5—10 pectinate, joints 3, 4 triangular. Elytra sinuate at apex, suture prolonged into a spiniform process and red, beneath which are appendages of curious structure, one being spiniform and pro¬ jecting backwards under the spiniform process of the suture and concealed bv it from above. J
Female. — Unknown.
Collected by Mr. G. R. Crotch, at Fort Tejon and Sauta Barbara, California.
Iw'o specimens, both males, are before me which differ from each other as follows : the smaller has the antennae less decidedly pecti¬ nate, the elytra more opaque and bronzed instead of blue, and the discal black spots of thorax much smaller.
This species is closely allied to mirandus, which, however, has the elytral appendages very prominent and has not the suture prolonged, although there is a small juxta-sutural appendage.
28
G. II. HORN, M. D.
91. Thevenetii, n. sp. — Black, with slightly bluish tinge, thorax rufous with discal black spot. Head smooth, with slight transverse impression. An- tennte black, pectinate £ . Thorax broader than long, sides feebly, base more decidedly arcuate, hind angles broadly rounded, slightly reflexed, surface smooth, feebly shining. Elytra bluish, opaque, finely scabrous, at tip appen- diculate, sutural angle prolonged in a long coriaceous process. Body beneath and legs black with tinge of blue. Length .20 inch ; 5 mm.
The elytral appendices are as usual inferior but not concealed en¬ tirely from above. The sutural prolongation is limited externally by a deep sinuation of the elytra. ,
One specimen collected by I>r. Alphonse Thevenet, Mariposa county, California, in the collection of Dr. Leconte.
The addition of the above species requires some modification of the table given by me (Trans. Am. Ent. Soc., 1872, 113) for those species in which the male has pectinate antennae.
Antennae pectinate in the male.
Elytra appendiculate in the male.
Appendices entirely concealed from above, suture prolonged in spiniform process, tipped with rufous . spillipennis.
Appendices visible from above.
Elytra % either entirely yellow or tipped with pale rufous, sutural an¬ gle appendiculate, appendix slender, hind tibiae yellowish testaceous.
mirandus.
Elytra % entirely blue, sutural angle with long but not very siender ap¬
pendix, legs entirely black tinged with blue . Thev«*nelii.
Elytra not appendiculate in the male.
Elytra bluish with broad oblique vitta from humerus to suture . macer.
Elytra bluish tipped with yellow % . mixtus.
Elytra entirely black £ . l lkii.
STIBIA, Horn.
ovipciinis, n. sp. — Form moderately robust, color piceous black, shi¬ ning. Head coarsely and densely punctured, punctures slightly strigose, especially in front. Thorax nearly twice as wide at middle as long, apex deeply emarginate, base feebly arcuate, sides regularly and rather strongly ar¬ cuate, disc convex, densely and coarsely punctured, punctures slightly strigose near the sides. Elytra regularly oval, slightly more attenuate at apex, one- fourth broader than the thorax and nearly four times as long, convex, with coarse punctures placed in strise at the middle of each elytron, confused at the sides and near the suture and totally obliterated at apical third. Thorax be¬ neath very coarsely punctured, abdomen obsoletely and very sparsely punc¬ tured, mesosternum coarsely punctured, metasternum very coarsely cribrate. Length .14 — .18 inch; 3.5 — 4.5 mm.
Male. — First ventral segment with a broad, shallow, coarsely punctured fovea behind the intercoxal process, last ventral segment nearly smooth.
Female. — First ventral segment slightly punctured at middle, not foveate, ast ventral rather coarsely punctured.
AMERICAN COLEOPTERA.
2!)
This species may be distinguished from puncticollis by its smaller size, more robust form, different elytral sculpture and by the smooth abdomen.
Two specimens were collected by Mr. Crotch, at San Diego. Cal.
S. hispidula, n. sp. — Form robust, pieeous black, moderately shining, sparsely clothed with moderately long yellowish hairs. Head coarsely, densely and sub-strigosely punctured, middle lobe of clypeus rounded in front. Tho¬ rax twice as wide as long, anterior angles acute and very prominent anteriorly, base slightly wider than apex, at middle slightly arcuate, on each side feebly sinuate, hind angles rectangular; sides very feebly arcuate, disc very convex with ante-basal transverse impression; surface coarsely, deeply and rather densely punctured, punctures becoming slightly strigose at the sides. Elytra broadly oval, very convex, moderately coarsely but not densely punc¬ tured, punctures with faint tendency to a seriate arrangement. Thorax be¬ neath very coarsely, deeply and rather densely punctured, mesosternum less coarsely punctured, metasternum with very large, deep punctures, abdomen moderately densely punctured. Outer margin of anterior tibiae slightly spiuu- lose. Length .22 inch ; 5.5 mm.
The appearance of this species is somewhat that of Triorophus. It may be at once known by its form, the very prominent anterior angles of the thorax, and the sparsely hairy surface.
One specimen collected by Dr. Edw. Palmer, in Utah.
Besides the differences indicated in the table between this genus and Triphalus (the longer hind tarsi), it will be observed that the tarsi have coarser and sparser vestiture, and the elytra much narrower epipleurse. The sexual character above indicated in S. ovipennis ap¬ pears to be unique in the species of the tribe in our fauna. In form the species more closely resemble Triorophus , but this has the vestiture of the tarsi spinous beneath, the epistoma with much longer middle lobe which is narrowed at base and clasped by the basal tooth of the mandibles.
The three species forming the genus are related as follows : —
Elytra oblong, punctures larger, arranged in regular striae.
Thorax moderately emarginate in front, angles not prominent.
puucticollis.
Elytra broadly oval, punctures very irregularly arranged.
Thorax moderately emarginate, angles not prominent . ovipennis.
Thorax deeply emarginate in front, anterior angles very acute and promi¬ nent, disc with ante-basal transverse impression . hispidula.
The tribe Grnathosiini, as at present constituted, appears to consist of material entirely too heterogeneous to be associated together. Cra- niotus cannot form part of the tribe for the following reasons. The metasternal episterna are broad, in fact nearly as wide as long, aud
30
G. n. HORN, M. D.
very much narrowed at the anterior extremity. The intercoxal pro¬ cess is short and very broad, and the antennae are ten-jointed, the eleventh joint being small and conical and connate with the tenth, and finally the lateral lobes of the front are large, triangular, acute and very prominent laterally. The genus must obviously constitute a distinct tribe nearer the Epiphj/sini than Gnathosiini , defined by the characters above noted ; it cannot, as suggested by Lacordaire, be as¬ sociated with Meyagenhts , as this has the metasternal episterna nar¬ rower.
With Craniotus removed the tribe becomes more homogeneous. It may be observed, however, that while all the other genera have the mandibles grooved above so as to permit them, when closed, to clasp the middle lobe of the epistoma and thus completely conceal the lab- rum (without becoming themselves concealed when viewed from above), Auchmobius has the mandibles feebly grooved not clasping the middle lobe of the epistoma, when in repose, allowing the labruin to be partially visible, while they are completely invisible from above. It is also the only genus without supra-orbital ridge, and has the outer joints of the antennae compressed, broader than long and trapezoidal in form, [t might possibly represent another tribe, the form of the antennae being totally unlike that of any other genus in the earlier groups.
The tribe thus becomes reduced to four genera, the relations of which are as follows: —
Intercoxal process of abdomen broad, feebly narrowed in front, tip subtruncate or rounded.
Tarsi spinous beneath. Hind tarsi with joint 1 equal to 3, 4.
Middle lobe of epistoma narrowed at base and clasped by a tooth-like pro¬ cess from the base of the mandibles . Triorophus.
Middle lobe of epistoma triangular, rapidly Darrowed in front, mandibles without basal tooth . Stibia.
Tarsi with silken hairs beneath. Hind tarsi with joint l equal to joint 4 only.
Middle lobe of epistoma uarrower in front, mandibles without basal tooth,
thorax narrower in front . Triphalus.
Intercoxal process of abdomen triangular, either acute or oval at tip. Tarsi spinous beneath.
Middle lobe ol epistoma narrower in front, either oval or truncate... Trimytis.
1 he above genera all have the prothorax coarsely punctured be¬ neath and the metasternum very coarsely and deeply cribrate, a cha¬ racter entirely unknown elsewhere among our Gnathosiini. In Trioro- phus it will be seen that certain specimens are stouter in form, the
AMERICAN COLEOPTERA.
31
elytra being more broadly oval, others are more slender and always smaller. The former I find to have a smooth head and the mandibles very decidedly sometimes rather deeply notched. Both the above characters are somewhat variable but hold good with the majority of specimens, and they appear to me to be sexual.
CHILOiHETOPOM, n. gen.
Body winged, elongate oval. Front trilobed, middle lobe promi¬ nent, trapezoidal, feebly clasped by the mandibles and entirely con¬ cealing the labrum. Eyes with superciliary ridge, prominent and coarsely granulated. Antennae longer than head and thorax, slender, joints 8 — 10 somewhat broader, last joint equal to ( helopioides ) or louger (abnorme) than the preceding. Mentu.n transversely hexago¬ nal, large, anterior angles rounded. Maxillary palpi with last joint elongate triangular. Prostern urn not produced behind. Legs slen¬ der, anterior tibiae slender without apical prolongation, tarsi sparsely clothed with short spines, hind tarsi moderately elongate, first joint equal to the third and fourth together.
Two species before me agree in the possession of the above cha¬ racters.
The genus is referred to Epitragini from the form of the front and the elongate metasternum. In both species the thorax is somewhat narrower than the elytra, although not more so than in some of our E pi- tragus. The vestiture of the tarsi is nearly as stiff and spinose as in Triorophus. The middle lobe of the front is very prominent, truncate in helopioides , and oval at tip in abnorme , the surface being flat in the former and moderately convex in the latter. Regarding the affinities of this genus with foreign genera I express no opinion; from our owu genera of the tribe it is easily known, the tarsal vestiture and superciliary ridge at once distinguish it from Schoenicus, with which alone it could be founded. The two species are : —
C. abnorme, Horn ( Trimytis) , Trans. Am. Phil. Soc. 1870, p. 261. — Thorax narrower at base than apex. Las joint of antennae as long as the two preced¬ ing together. Length .26 inch; 6.5 mm.
Collected in Nevada. Cabinet of Dr. Leconte.
CL helopioides, n sp. — Castaneons, shining, form oblong oval. Head broadly oval. Mandibles and clypeus coarsely and densely punctured, vertex and occiput much more sparsely. Thorax nearly twice as wide as long, apex feebly emarginate, anterior angles acute and very slightly everted, base broadly rounded at middle, feebly sinuate each side, hind angles subacute but not prominent, sides moderately arcuate and slightly divergent to base. Ely¬ tra slightly broader at base than thorax, elongate oval, sides moderately arcu-
G. H. HORN, M. D.
ate, humeri distinct, surface moderately convex, sparsely punctured, punctures feebly seriately arranged becoming slightly muricate and dense at the sides and apex. Epipleurae entire. Thorax beneath densely variolato-punctate, inesosternum coarsely and densely punctured, metasternum moderately long, at middle very sparsely punctured, sides and parapleurte very densely punc¬ tured. Abdomen sparsely punctured. Femora coarsely but sparsely punc¬ tured. Length .26 inch; 6.5 mm.
This species superficially resembles ITclops convexus, Lee., and does not differ greatly in form from several species of Eurymetopon,e. g. pvnclulatum and sodale.
One specimen collected by Mr. E. P. Austin, in California.
CRYPTADIUS, Lee.
At the time of the preparation of the revision of the Tenebrionulse of the United States Cryptadiua was unknown to me, the type hav¬ ing been lost at sea while being sent for study to Lacordaire. lle- cently specimens have been collected at San Diego, California, by Mr. G. R. Crotch, and I am enabled to present the following observa¬ tions : —
Head moderately deeply inserted; epistoma subtruncate at middle and slightly notched on each side; labrum moderately prominent; eyes feebly transverse, coarsely granulated, slightly notched in front and with distinct supra-orbital ridge; mentum large hexagonal, feebly emarginate in front; last joint of maxillary palpi elongate oval, nearly twice the length of the preceding joint; antennae attaining the hind margin of thorax, first joint stouter, second and fourth equal, third longer, 8 — 11 slightly broader, the last joint oval at tip. Middle coxae entirely enclosed without visible trochantius. Intercoxal pro¬ cess narrow, rounded at tip. Epipleurae moderate entire. Anterior tibiae with the outer angle prolonged into a long obtuse process, sinu¬ ate on its lower margin. Hind tarsi nearly as long as the tibiae, the first joint longer than the two following combined. Scutellum very small, between the elytra transverse.
C. inflatus, Lee. Ann. Lyc. v., p. 140. — Body black, feebly shining, form broadly oval, robust, convex, apterous. Head coarsely, densely and deeply puncturod. Thorax more than twice broader than long, moderately emargin¬ ate in front, anteriorly narrow, sides feebly arcuate, and very narrowly mar¬ gined, bind angles obtusely rounded, surface densely and moderately coarsely punctured and opaque, punctures at the sides strigose. Elytra slightly broader than the thorax, oval, slightly attenuate at apex, surface convex, moderately densely sub-muricately punctured and in the intervals very minutely aluta- ceous. Body beneath more shining than above, piceous, very sparsely punc¬ tured. Legs rufo-piceous. Length .26 inch ; 6.5 mm.
From the above characters it will be seen that its place is with the
AMERICAN COLEOPTERA.
33
genera allied to Eurymetopon and not with those in which the front is trilobed. The notch on each side of the front is already known in Eurymetopon , in fact I can see no character of importance separating the two genera; the robust form, even, being already indicated by E. convexico/le , Lee., and F. bico/or, Horn. Cryptadius should, in my opinion, be suppressed into Eurymrtopon.
SCHIZILLUS, n. gen.
The above generic name is proposed for a form belonging to the tribe Cryptoglossini \ allied more nearly to Centrioptera, from which it differs only in having the gense much broader and the eyes completely divided, the under portion of each eye very indistinctly granulated. The menturn is broader than long, anteriorly truncate and feebly emarginate at middle. Front hemi-hexagonal. The antennae are 11- jointed, the first short and stout, invisible from above, terminal joint broadly oval, stouter than the preceding.
S. laticeps, n. sp. — Black, sub-opaque, moderately robust. Head sparsely punctured, neck densely and finely granulate. Thorax broader than long, apex moderately deeply emarginate, slightly broader than the base, sides moderately arcuate, sinuate near the base, hind angles rectangular, base very feebly emarginate, surface moderately convex, sparsely punctured and sub¬ opaque and with a moderately deep, transverse, ante-basal impression. Elytra oblong oval, not wider at base than the thorax, widest at middle, sides moder¬ ately arcuate; surface moderately convex with rows of punctures on the disc becoming irregular and sub-muricate at the sides and apex ; intervals flat sub- muricate punctate. Prothorax beneath sparsely punctate, prosternum acutely oval, slightly produced, margins slightly reflexed ; mesosternum nearly verti¬ cal emarginate in front; abdomen sparsely and obsoletely punctate. Legs black, sparsely muricately punctate. Tarsi stout. Length .75 — .90 inch; 23 mm.
The thorax of this species is similar to that of Cryptoglossa luevis, but less convex, while the elytra resemble in sculpture Elcodes conso- brina. The head is much broader than in any Centrioptera in our fauna.
The specimens, from which the above description was taken, were captured by Mr. Crotch in the Mojave Desert, California.
ELEODES, Esch.
E. vetorator, n. sp. — Black, above sub-depressed, opaque, sparsely clothed with short yellowish hairs. Form broadly ( 9 ) or more elongate ( % ) oval. Head sparsely punctured and pubescent. Thorax nearly twice as wide at base as long, apex emarginate not wider than the length of thorax, sides regularly arcuate and gradually narrowed from base to apex, base squarely truncate, surface feebly convex, opaque, sparsely punctured and pubescent. Elytra at base very slightly broader than the thorax and slightly overlapped by it,
TRANS. AUER. ENT. SOC.
(5)
FEBRUARY, 1874.
34
G. II. HORN, M. D.
sides regularly arcuate, gradually narrowing to base and continuing regularly the curve of the sides of the thorax, lateral margin acute at basal third; sur¬ face feebly convex, opaque, sparsely pubescent and punctured, pubescence ar¬ ranged so that the surface appears sub-striate. Body beneath black, shining, sparsely punctured and with slight pubescence. Tarsi spinulose. Length .38 — .42 inch ; 9.5 — 10.5 mm.
The spinulose tarsi not dilated in the male, the slight dissimilarity between the spurs of the anterior tibiae in the sexes (less marked, however, in this species than in any other of the group), the anterior spur of the female larger in every way than the posterior, at once in¬ dicate the affinity of this species with those of the tricostata group and not with opaca , with which a slight superficial resemblance would seem to associate it. It may be at once known from every EleoJes in our fauna by its regularly oval form, equally narrowed at the two ex¬ tremities, the thorax squarely truncate and its sides regularly arcuate and gradually narrower from base to apex.
Numerous specimens of this species were kindly presented by Mr. William Julichs, of New York, by whom they were procured from Texas.
E. texami , Lee. — From collections recently made in the northern parts of Texas I have become convinced that this species is merely a large variety of suturalis, Say.
IPHTI1I9IUS, Truqui.
I- zoplieroidcs, n. sp. — Black, shining, form strongly recalling Zopherus. Head sparsely, between the eyes coarsely and very deeply confluently punc¬ tate. Thorax trapezoidal, wider in front, apex feebly emarginate at middle, anterior angles very broadly rounded, sides at anterior third parallel, thence gradually narrowed to the base which is truncate, disc convex longitudinally and transversely, shining, sparsely punctured. Elytra oblong, slightly broader behind the middle, convex, shining and with eight discal and a marginal row of deep, coarse, distantly placed punctures. Body beneath black, shining, mesosternuin densely and coarsely punctured, abdomen sparsely punctured and slightly wrinkled longitudinally. Length .80 inch; 20 mm.
The mentum of this species differs notably from that of our other species, being trapezoidal and strongly convex at middle, the usual form being broader with rounded angles, a median groove and on each side slightly concave. This variation taken in conjunction with the general form, which is remarkably Zopheroid would seem to indicate the propriety of separating the species generically. A comparison of the superficial characters shows nothing greatly at variance with the other Iphthimus except the much more convex form, although the thorax is somewhat longer and the hind angles not prominent.
AMERICAN COLEOPTERA.
35
For the unique in my cabinet I am indebted to Mr. A. S. Fuller, who obtained it from New Mexico.
I. serratus, Mann.
Ibis species is introduced to call attention to a curious variety, found by Mr. Crotch, of much greater size than usual. The head and thorax are smoother and more shining, very minutely punctulate, the thoracic margin more broadly reflexed and very irregularly crenulate. The elytra are subopaque and the striae with the usual punctures re¬ duced to very indistinct longitudinal and transverse wrinkles, the intervals being minutely and not densely punctulate. The specimen is slightly more than an inch long.
NYCl'OBATES, Gudrin.
N. su buttons, n. sp. — Elongate, black, subopaque. Head very minutely punctulate. Antennse with third joint nearly equalling the three following together. Thorax slightly broader than long, apex truncate, base very feebly sinuate, sides moderately arcuate in front, narrowed and slightly sinuate near the base, hind angles acute but not prominent, surface moderately convex sparsely and very minutely punctulate. Elytra broader than the thorax, gradually attenuate at apical third, surface slightly more shining than the thorax with faint rows of minute punctures, the intervals very sparsely and more finely punctured. Body beneath shining, sparsely punctulate, abdomen longitudinally wrinkled. Prosternum between the coxae convex, and elevated in a slight tubercle at tip. Length .70 inch; 18 mm.
A comparison of this species with either of the others shows a greater length of the third joint of the antennae. The sides of thorax are more arcuate in front aud more sinuate posteriorly. The entire surface is less shining and less distinctly sculptured. The prosternum is narrower and convex longitudinally between the coxae and elevated in a tubercle at tip, our other species having the prosternum broader nearly flat and not tuberculate at tip. The mentum is also more con¬ vex and the anterior angles more distinct.
The unique in my cabinet was given me by Mr. H. Ulke, who ob¬ tained it from Arizona.
Scotobrcnus parallelus, Lee.
The males of this species have the anterior femora stouter than the lemales, the tibias slender at basal fourth and the inner margin covered with small tubercles. The middle and hind femora have a silky pubescent space along their lower edge.
PHTIIORA, Muls.
P. americana, n. sp. — Oblong, ferruginous, shining. Head sparsely punctured. Thorax broader than long, apex feebly emarginate, base feebly
36
G. H. HORN, M. I).
arcuate and slightly broader than the apex, sides very feeblv arcuate, margin thickened and somewhat reflexed, surface shining, sparsely and evenly punc¬ tured. Elytra as wide at base as thorax, parallel, moderately deeply striate, strias coarsely and subseriately punctured, intervals moderately convex, sparsely punetulnte. Body beneath paler than above, very sparsely and finely punctulate. Length .12 inch ; 3 mm.
The appearance of this snsect is that of a miniature but rather con¬ vex Uloma It resembles also Dioedus more closely, but differs in having the last three joints of the antennae thickened, while Dioedus has but two.
Speciuies collected in Oregon were kindly given me by Mr. A. S. Fuller,
SCI A 1*11 1 DEItI.4, Redt.
S. pietum, n. sp — Oval. Head black, surface aeneous sparsely punctate. Thorax nearly twice as wide as long, sides in front feebly arcuate, posteriorly nearly straight and slightly divergent, hind angles rectangular, color black, surface aeneous sparsely punctate, basal impressions extending nearly to mid¬ dle. Elytra at base broader than the thorax, moderately convex, sides moder¬ ately arcuate, surface striate, striae finely punctured, intervals flat, biseriately finely punctulate and obsoletely reticulate, color yellowish testaceous, with basal black band broad at middle, an irregular sinuous transverse band at middle composed of lines of variable length on the intervals but shortest at the suture, and a subapical oval spot, apical margin piceous. Epipleurse pale. Body beneath piceous slightly aeneous, sparsely punctulate and shining. Fe¬ mora piceous, tibiae and tarsi paler. Length .14 inch; 3.5 mm.
The form of this species is broader than seneolurn and resembles more nearly that of the European species.
Occurs in Oregon. Henry Edwards.
IIELOPS, Fab.
II. arizonensis, n. sp. — Form rather slender, apterous, black, opaque. Head coarsely and rather deeply punctured. Antennae nearly half the length of the body, outer joints slightly c impressed, very slightly shorter. Thorax slightly wider than long, sides feebly arcuate, margin obtuse, apex truncate, base feebly arcuate, hind angles slightly prominent, disc moderately convex, densely and coarsely punctured and opaque, beneath punctured as above. Elytra oblong, humeri obtuse, surface deeply striate, strise coarsely punctured, intervals convex and finely granulated. Body beneath black, slightly more shining than above, rneso- and metasternurn coarsely punctured, abdomen finely rugulose and more sparsely and finely punctured. Length .34 inch; 8.5 mm.
By the character given in the table (llevis. Tenebviouidae, p. 392) this species should be placed near sufcipennis, but by its opaque sur¬ face and doeply sulcate elytra it differs from every other species in our fauna.
Specimens from Arizona were kindly presented by Mr. C. V. Riley.
AMERICAN COLEOPTERA.
37
EPICAUTA, Redt.
E. sanguinicollis, Lee. Proc. Acad. 1853, p. 344.— Body entirely black, head and thorax red. Head shining sparsely punctured, epistoma and mouth black. Antennae black, filiform. Thorax not wider than the head, slightly longer than wide, sides parallel, arcuately narrowed in front, moderately con¬ vex, median line and ante-scutellar impression feeble, surface shining, rather sparsely but coarsely punctured. Elytra nearly twice as wide as thorax, black, coarsely scabrous, sparsely pubescent with black, with very narrow median stripe, sutural and lateral margins sparsely cinereo-pubeseent. Body beneath and legs black, sparsely pubescent. Length .32 inch; 8 mm.
This species should be referred to section A of the revision of this geuus (Proc. Am. Phil. Soc. 1873, p. 95), from all the species of which it differs by its color and the arrangement of the elytral pubes¬ cence.
One female specimen, collected in Florida, was kindly given me by Mr. Edward Tatnall, of Wilmington, Del.
E. Rileyi, n. sp. — Body tyack, densely clothed with recumbent ochreous pubescence. Head densely and finely, behind the eyes coarsely punctured rather densely pubescent, between the bases of the antennae a smooth polished, triangular space and above the eyes and surrounding them on their posterior and upper margins a sinular smooth space terminating at the inner side of each eye in a deep fossa. Thorax subquadrate, sides very feebly arcuate, slightly converging anteriorly, disc feebly convex and with a vague but broad fossa near each front angle, surface densely and finely punctured and densely pubescent, the pubescence in the fossae shorter (as if shaven). Elytra one-half broader than the thorax, parallel, suture at middle slightly elevated, surface densely and finely punctured, very densely clothed with ochreous pubescence, and on each side of the scutellum at base a narrow black space. Body beneath and legs very densely clothed with a somewhat paler pubescence than above, the abdominal segments at the sides with a small black spot and a similar spot on the middle of segments 2, 3, 4. Length .40 inch ; 16 nun.
The eyes of this species are smooth, not at all granulated, although the lenses are distinctly visible from their transparency; otherwise the eyes are similar to the species of section C. The antennae are rather setaceous as in that group. The rather deep fossae at the inner sides of the eyes mark this species as one of the most peculiar of the genus. Superficially the species resembles a pale ferruginea, and its place in the series is near caviceps , forming a section by itself.
The two specimens before me exhibit no marked sexual differences and are probably both females. They were collected in Arizona and presented by Mr. C. V. Riley, of St. Louis, to whom I take great pleasure in dedicating it.
38
G. n. HORN, M. D.
E. Alplionsii, n. sp. — Black, moderately shining. Head shining, sparsely punctured, posteriorly sparsely cinereo-pubescent. Thorax slightly longer than wide, sides in front slightly arcuate, posteriorly parallel, surface shining, sparsely punctured. Elytra black, scabrous, very sparsely clothed with short black hairs, suture and sides narrowly margined with long whitish hairs. Body beneath and legs black, shining, legs sparsely cinero-pubescent. Length .36 inch ; 9 mm.
One specimen in the cabinet of Dr. Leconte, collected in Mariposa County, California, by M. Alphonse Theveuet, to whom it is with great pleasure dedicated.
The antennae of this species being filiform and the joints closely placed, and the eyes moderately broad, coarsely granulated and moderately convex, show the position of this species to be in the same group with puncticollia and oblita. The narrow sutural and marginal cinereous lines are found also in the group in sanyuinicoilis.
CANTIIABIS, Linn.
C’. tencbrosa, Lee.
A male of this species is in the collection of Mr. G. 11. Crotch, having the antennae very slightly thickened at middle, barely enough to indicate its position in the group in which it was placed. The an¬ tennae are, however, very short as in many of the species of group I. being barely the length of the head and thorax. The outer spur of the hiud tibiae is stouter than the inner, very obliquely truncate and slightly broader at tip. The following are the abdominal characters :
Male. — Fifth ventral segment broadly rounded, sixth subtruncate and slightly emarginate at middle.
Female. — Fifth ventral broadly rounded, sixth oval and very feebly emarginate at tip.
C. Crotcliii, n. sp. — Head entirely black with aeneous surface, coarsely, deeply and moderately densely punctured, especially at the sides, sparsely clothed with erect black hairs. Thorax broader than long, sides regularly arcuate, basal margin slightly reflexed and feebly emarginate at middle, color reddish-yellow, surface moderately convex and shining, very sparsely and unevenly punctured. Elytra one-third broader than the thorax, coarsely scabrous, black with bronzed surface, sparsely clothed with short, black, erect hairs. Body beneath and legs black and slightly bronzed. Outer spur of hind tibife slender, very obliquely truncate at tip. Length .30 — .40 inch; 8 — 10 ram.
Male. — Fifth ventral segment very broadly emarginate, sixth moderately emarginate.
Female. — Fifth ventral broadly emarginate, sixth with scarcely evident emargination.
This species is closely allied to aeneipennis, next to which it should be placed in the table (Proc. Am. Phil. Soc. 1873, p. 110), and from
AMERICAN COLEOPTERA.
39
which it differs by the totally black, coarsely and deeply punctured head.
Collected by Mr. G. R. Crotch, at San Diego, California.
C. insperatus, n. sp.— Black, moderately shining. Head sparsely and finely punctured. Thorax subquadrate, base slightly narrowed, sides in front arcuate, surface moderately convex, median line feebly impressed, very sparsely punctate. Elytra less shining than thorax, finely scabrous. Body beneath black, very sparsely punctate, sparsely cinereo-pubescent. Legs black, punctate, with black pubescence, middle tibiae slightly arcuate, outer spur of hind tibiae short, very stout, truncate. Length .80— .90 inch; 20—23 m m .
Male. — Antennae not stouter at middle, as long as half the body. Last dorsal segment truncate. Fifth ventral acutely and deeply notched, sixth deeply cleft and fimbriate at tip. Hind trochanter with short spine near the tip. Anterior tibiae with two spurs.
Female. — Antennae shorter than the male, gradually thicker to tip. Fifth ventral truncate, sixth rounded at tip. Hind trochanter mutic.
This species is almost intermediate in appearance between melaena and moerens. It belongs to Group II. of my revision (Proc. Am. Phil. Soc. 1873, p. 1U9), by the. form of the antennae, and to the first section of that group by the short, stout, truncate spur of the hind tibia. The male characters will serve to distinguish the species from any other in the group.
In C. moerens , Lee., the outer spur of the hind tibia is slender and acute and the hind trochanter of the male angulate near the distal end, thus approaching the preceding species.
Specimens of the above described species were taken by Mr. Crotch, in the Mojave Desert, California.
XANTIIOCIIROA. Schmidt.
X. californica, n. sp. — Form slender. Head, thorax, femora and last abdominal segment pale reddish-yellow, body beneath, tibiae and tarsi black, shining, elytra bluish. Front very sparsely punctured, nearly smooth, occiput distinctly punctured. Antennae half the length of body, entirely black. Thorax slightly longer than wide, sides in front arcuate, posteriorly slightly sinuate, disc feebly convex, shining, very indistinctly punctured. Elytra bluish, moderately densely scabro-punctate, sparsely pubescent and with three feebly elevated costifonn lines, two discal and one lateral, gradually evanes¬ cent toward the apex. Body beneath black, shining, very sparsely punctate, dorsal and ventral segments pale rufo-tcstaceous. Femora and base of tibia} pale rufo-testaceous, tibiae and tarsi black. Length .38 inch; 9.5 mm.
One specimen collected by Mr. G. R. Crotch, in California.
CORPHYRA, Say.
Several new species having been brought by Mr. Crotch, the num-
40
G. H. HORN, M. D.
her from the Pacific region now nearly equals that from the entire region east of the Rocky Mountains. Several present characters be¬ fore unknown, which will appear in their proper places.
The following table contains the Pacific species only : —
Hind tibiae male slightly arcuate, inner side flattened and obliquely grooved
(as in the anterior tibiae of the Lamiidce) . . abnor nils.
Hind tibiae similar in the sexes, slightly, or not grooved.
Elytra in both sexes rounded at tip or very slightly more acute in the
male . ’•
Elytra in male acutely prolonged, subcaudate . 2.
1.— -Antennae of male pectinate. Elytra % feebly impressed at tip..Crotcliii.
Antennae of male at most serrate . !4.
3. _ Elytra at tip 'J, slightly swollen and impressed . iuonticola.
Elytra at tip % neither more convex nor impressed . 4.
4. — Elytra at tip % pale rufo-testaceous and smoother . 5.
Elytra at tip similar in the sexes and similarly punctured . «».
5. — Thorax red (sometimes with diseal black spot?) . punctulata.
Thorax black . funebris.
6. — Thorax black, elytra vittate and finely punctured . vittata.
Thorax red, elytra black, moderately coarsely punctured. ..inconspicua.
2. — Elytra black with oblique testaceous vitta . Barilii.
Elytra entirely black . distingucmla.
C. abnormis, n. sp. — Head black, sparsely punctate. Antennse black, moderately serrate. Thorax transversely oval, rufous, shining, very sparingly punctate. Elytra black, shining, moderately densely and coarsely punctured. Body beneath black, shining, very sparsely punctate. Legs black. Length .28 inch ; 7 mm.
Male. _ Elytra at tip not differing from the remainder of the surface in color
and punctuation and neither impressed nor convex. Hind femora moderately stout. Hind tibiae slightly arcuate, inner side slightly flattened and with an oblique groove somewhat similar to that of the anterior tibiae of the Lamioid Ccrambycidoe. Fourth ventral segment prolonged in a broad lobe at middle on each side of which the margin is sinuate; fifth segment truncate at middle and with a broad but feeble transverse channel in front of the hind margin, and in front of this the surface is moderately convex; sixth segment feebly promi¬ nent. Terminal lobes of penis sheath slightly arcuate, obtuse at tip and not hooked on their inner margin.
Female. — U n known.
This species is certainly one of the most remarkable in the genus, and indicates a departure of specific characteristics, in a direction wholly unexpected. Superficially it resembles punctulata. The fe¬ male is unknown and probably not distinguishable without great care from that of punctulata.
One specimen collected by Mr. Crotch, in California.
AMERICAN COLEOPTERA.
41
C. Crotchii, n. sp.— Head blaek, sparsely punctured and shining, mouth and palpi testaceous. Antennae % moderately strongly pectinate from the third joint, black. Thorax rufous sparsely punctured. Elytra (variable in color?) yellowish testaceous, suture, margin and tip narrowly bordered with black, sparsely and rather coarsely punctured and sparsely flavo-pubeseent. Body beneath black, abdomen piceo-testaceous (immature?). Legs piceous, femora beneath testaceous. Length .20 inch; 5 mm.
Male. Elytra at tip black, smooth and with broad shallow impression.
Female. — Unknown.
The elytra in this species maybe perhaps entirely black in maturity. It differs from every known Corphyra by the pectinate antennm which resemble those of a Malachius.
Collected by Mr. G. It. Crotch, at Chrystal Springs, California.
C. moilticola, n. sp. — Head black, shining, sparsely punctured. Anten¬ nas (2 basal joints) piceous. Thorax transversely oval, red, sparsely punctured. Elytra (variable?) pale rufo-testaceous, moderately densely punctured. Body beneath black, legs pale rufo-testaceous, tarsi piceous. Length .26 inch ;
6.5 mm.
Male. Elytra at tip either pale rufous or black, more convex, smoother, and with a distinct but shallow impression.
Female. — U n known.
Resembles at first sight some of the varieties of punrtulata, from which the male characters and pale legs at once distinguish it) differs also from elerjans by the entirely black abdomen. The elytra may be¬ come entirely black except at tip in male.
Collected by Mr. Crotch, at Calaveras, California.
C. punclulala, Lee. Ann. Lyc. v. 151.
Califor nia.
C. ftinebris, Horn, Trans. Am. Ent. Soc. 1871, p. 2SG.
California. I have suspected that these species might be varieties of one. Varieties of funebris with pale elytra have been brought by Mr. Crotch and also a specimen apparently of puuctulata, with a lanre discal black spot on the thorax.
An examination of the penis-sheath shows, however, that while in ^the former the processes at the tip are parallel and contiguous, those ofthe latter are somewhat longer and divergent. This organ appears to vary somewhat between all the species.
C. vittata, Horn, loc. cit. p. 279.
Varieties of this species may occur with the elytra entirely testa¬ ceous and the suture alone broadly black. The legs may be also entirely pale, and the antennae rufo-piceous.
Occurs at Chrystal Springs, California.
(6)
TRAN8. AMER. ENT. SOC.
MARCH, 1874.
42
G. H. nORN, M. D.
C. iiiconspioua, n. sp. — Head black, moderately coarsely but sparse! punctured. Antennae J, subserrate, entirely black. Thorax rufous, sparse! punctured. Elytra black, sparsely and moderately coarsely punctured, am. sparsely pubescent. Body beneath and legs black. Length .20 — .26 inch ; 5 — 6.5 min.
Mate. — Elytra at tip black, neither smooth, elevated nor impressed.
Female. — Elytra resembling the male.
Resembles collaris from the Atlantic Region which, however, has the elytra of male at tip somewhat smoother and distinctly impressed.
Collected in California and presented by Mr. P. S. Sprague, of Boston.
C. Itardii, n.sp. — Ilead black, front sparsely, hind angles coarsely and densely punctured. Antennae black, subserrate. Thorax rufous very sparsely punctate. Elytra black, with oblique, narrow, testaceous stripe from the humerus to the apex, surface coarsely and deeply and not densely punctured. Body beneath and legs black. Length .22 inch; 5.5 mm.
Male. — Tip of elytra testaceous, prolonged and turned slightly upward.
Female. — Elytra normal at tip.
Collected by Mr. Crotch, at San Buenaventura, California ; dedi¬ cated to Mr. Thomas Bard, of that region.
<1. distiiiKiienda, n. sp. — Closely allied to the preceding species and agreeing with it in form and sculpture and and differs only in the elytra being entirely black (except at tip %) without oblique vitta. Length .22 inch ; 5.5 in in.
Collected at San Buenaventura, California.
These two species, Bardii and distinguenda , differ from all the other species in having the elytra caudate in the male. The pro¬ longation is acute and turned slightly upward and inward.
The species of Corphyra may be taken in considerable numbers, at times, on the flowers of various umbelliferous plants.
9IYCTEKUS, Clairv.
quutlrifollis, n. sp. — Black, elytra luteous or piceous. Head sub¬ opaque, densely punctured. Antenme pale yellow. Thorax sub-quadrate, slightly broader than long, sides feebly arcuate, base scarcely broader, surface moderately convex, median line vaguely defined and a feeble oblique impres¬ sion on each side near the middle. Elytra oblong wider at base than thorax, surface moderately coarsely punctured, punctures gradually finer to apex and with minute punctures in the intervals bearing short cinereous hairs. Body beneath black, opaque, densely punctulate and finely pubescent. Legs yel¬ lowish, hind femora piceous. Length .20 — .22 inch ; 5 — 5.5 mm.
Male. — First joint of antennae moderately stout; second not longer than fourth, elongated conical ; third gradually clavate, as long as the two follow¬ ing together; joints 4 — 10 irregularly quadrate, flattened, gradually shorter; joint 11 flattened pyriform. Last abdominal segment broadly rounded at tip,
AMERICAN COLEOPTERA.
43
slightlv emarginate at middle and not concave, broadly margined with rufous.
Female. — Antennse similar in form to the male but less flattened, joints longer than wide and more triangular.
This species differs from the other Mycterns in our fauna by the broader antennae of the male, the flat aud emarginate last ventral seg¬ ment, and the thorax not widest at base.
Specimens were collected by Mr. Crotch, at Temescal, California, on the flowers of Agave.
The last ventral segment, in the two other species of which the males are known, has the margin rather broadly reflexed so that there is a moderately deep semilunar depression formed, the posterior mar¬ gin is rounded in concolor and broadly truncate in scaler. The first ventral segment at middle in the above two species is elevated in a moderately convex umbone, which in scaler is densely pnbescent, and in concolor somewhat more convex, and in the only male before me entirely nude. The species just described does not appear to have this elevation of the first ventral segment.
Descriptions of New COLEOPTERA chiefly from the Pacific Slope of North America.
BY J. L. LECONTE, M. D.
The present paper is prompted by a desire to render the collections of Mr. Gr. R. Crotch, on the Pacific Slope of North America, available to the subscribers and purchasers of his collections with the least pos¬ sible delay. On examining the large number of specimens brought back by him, as was to have been expected, many new species were found; descriptions of the more interesting of these have been pre¬ pared by Dr. Horn, Mr. Crotch and myself, according as our famili¬ arity with the respective families represented by the new species has enabled us to do this with precision. I have availed myself of the preseut opportunity to add the characters of a few remarkable or im¬ portant species, partly from the Pacific, partly from other regions of the United States, which have been added to my collection, by the kindness of various friends.
44
J. L. LECONTE, M. D.
I trust that the anomalous characters and difficult position of some of the genera herein described will absolve me for departing, in this instance, from the generally established scientific usage of publishing in systematic or faunal memoirs.
TETRAGOXODERUS Doj.
T. lat ipcmiis. — Depressed, greenish bronze, without lustre; porthorax nearly twice as wide as long, rounded and sinuate on the sides, the reflexed margin of which is pale, moderately narrowed behind, hind angles rectangular or ueaily so, not at all rounded. Elytra nearly twice as wide as the prothorax, about one-third longer than wide, deeply eniarginate at base, much rounded on the sides, obliquely and strongly truncate at tip; color pale, with small dark spots forming a small subapical band, and limiting also a rather broad irregular pale brown band behind the middle; there is also a broad basal spot extended a snort distance along the suture; the strife are fine, somewhat deeper towards the tip; the 2d and 3d are slightly sinuous before the middle ; dorsal punctures two, near the 2d stria, the posterior one just behind the middle. AntennsB palpi and h gs pale. Length 5.6 mm ; .22 inch.
Texas; Mr. Bclfrage. The elytral markings arc of the same pattern as in T. fasriatus and undulatus, from which it abundantly differs by the other characters.
POCiOXUS Dej.
1*. parallel US. — Elongate, parallel, not very convex, testaceous, shining; prothorax hut little wider than head, a little wider than long, scarcely nar¬ rowed and very feebly subsinuate on the sides behind, base finely margined, slightly rounded near the hind angles which are rectangular, feebly carinate and not prominent; dorsal line fine, deeper towards the base, which is trans¬ versely impressed and foveate each side: elytra not wider than prothorax, very long and parallel, rounded and scarcely sinuate at the tip, strife fine punctured, obliterated at the base, humeri with a short carina; marginal and submarginal strife very deep, confluent at the anterior fifth of the length; dor¬ sal punctures two, the anterior on 3d, the posterior on 2d stria. Long 5.5 mm • • 22 inch.
Texas; one female. The mentum tooth is bicuspid, and the insect has otherwise all the characters of this genus. The basal fold of the elytra is nearly straight, and the humeral carina runs obliquely back¬ wards from it.
P. (lepressus. — Elongate, strongly depressed, testaceous; head rather large, mandibles more prominent: prothorax not wider than long, widest in front, feebly rounded on the sides, gradually narrowed behind and subsinuate, hind angles rectangular, slightly prominent, finely carinate ; dorsal line entire, deeper behind, transverse impressions well marked, the posterior one rugose; basal fovea* deep rugose: elytra at base wider than the base of the prothorax, basal fold strongly concave anteriorly, humeral carina forming part of the
AMERICAN COLEOPTERA.
45
curve, striae deep punctured, less distinct towards the base, marginal and sub- inarginal striro very deep, confluent at the anterior fifth, dorsal punctures three; scutellar stria distinct. Length 5.5 — 7 mm; .22 — .28 inch.
San Diego, California; Mr. (like. A singular insect, quite differ¬ ent in form from all others of the genus, and suggestive of a flat elongate Bembidium of the Peryphus group.
The frontal striae are long and deep, the eyes not very prominent, though convex; the 6th and 7th striae of the elytra are shorter and, more obliterated in front than the others; the antennae are pubescent, with the first two joints and half of the third shining and glabrous. In five specimens, kindly loaned to me, I observe no tarsal differences worthy of mention.
/*. texanus Chaud., is very different in appearance from the two above described. It is a short, robust, convex species of metallic blackish-green color, with the hind angles of the prothorax rectangu¬ lar but not carinate, and the base, each side, with two feeble foveae. The strife of the elytra are faint, only the inner ones being distinct, and they are distinctly punctured in front, finer and smoother behind ; the marginal and submarginal striae are confluent in front, but the latter is nearly obsolete except towards the tip, where it is deep. Body beneath blackish brown, legs testaceous. The general appear¬ ance is that of Brady cel/us nit id us.
I owe my specimen of this rare insect to the liberality of Baron Chaudoir, who. although having but two specimens in his cabinet, has divided them with me in order to make one of them accessible to American students.
HYDROSCAPHA, n.g. ( Hydroscnphidos .)
Head moderately large, eyes lateral coarsely granulated somewhat transverse ; antennae scarcely longer than the head, inserted under the edge of the front, with seven distinct joints; 1st stouter, 2d and 3d each as long as the 1st, but narrower, 4 — 6 together shorter than 2d and 3d united, gradually wider, 7th about as long as the 2d and 3d united, elongate oval, scarcely wider than the 6th, with an indistinct transverse suture near the base, and another very near the tip, which is subacute.
Labrum transverse, rounded in front concealing the mandibles. Maxillae large at the base (lobes not examined), maxillary palpi less than half as long as the antennae, 1st and fourth joints long, 2d and 3d united equal to either of the others, not dilated; mentutn trapezoi-
J. L. LECONTE, M. D.
4t>
dal, rather large, broader than long, wider in front; ligula rather large, emargiuate, palpi short, rather stout, 2d and 3d joints broader and shorter than the 1st.
Prosternum very short, hardly visible, front coxae transversely coni¬ cal, contiguous, trochantin largo, cavities narrowly closed behind ; middle coxae separated, small, mesosternum protuberant; metasternum large, side pieces narrower and pointed behind, hind coxae widely separated, laminate, the plate curved iu arc of circle behind, and half as long as the 1st ventral.
Abdomen conical with six free segments, 1st large, longer than the four following united, which are equal in length but rapidly nar¬ rower; Gth equal to the four preceding united, rather longer than wide, concave and emarginate behind, with two anal filaments equal in length to the segment itself.
Legs short, front tibia) somewhat thickened at tip; tarsi slender, rather shorter than tibia), apparently 4-jointed, 1st and 2d joints short, 3d equal to them united, 4th equal to the others united, claws rather long and slender.
Body small, scaphiform, rounded in front, narrowed behind, convex, elongate and shining. Head rather large; prothorax narrower in front, with deflexed angles, base truncate not margined. Scutellum small. Elytra without striae, slightly punctulate, broadly truncate at tip. Abdomen projecting somewhat behind the elytra, with three segmeuts visible, conical, not margined at the sides.
H. nutans. — Oval, narrower behind, convex, black or brown, shining ; head and prothorax nearly smooth, elytra sparsely and 6nely punctulate; an¬ tennae and legs testaceous. Length less than .5 mm ; .02 inch.
Found abundantly by Mr. Crotch, at Los Angeles in the river. Mr. Crotch informs me that this very singular insect resembles, in ap¬ pearance some of the species of Limnebius. It greatly differs from that genus, as from all other Hydrophil idee by the laminate and widely separated bind coxae, and by the peculiar abdomen. It seems to me another of the synthetic types gradually becoming known to us aiuoDg the smaller and more obscure forms, connecting several different fami¬ lies of the Clavicorn series; in this instance the ffydrophilidx , Scaph- idiidx and perhaps the Tru-hopterygidx. In the accepted arrangement of Coleoptera, it must be considered as indicating a new family.
AMERICAN COLEOPTERA.
47
SEPIDULUIN, n. g. ( Hydrophilidoe .)
Body small ovate convex, without lustre, prothorax greatly pro¬ duced in front over the head, divided by obtuse elevated lines into large cells; elytra costate, costae; separated by two distinct rows of quadrate punctures. Head flat, densely punctured, occiput convex and feebly channelled ; labrurn short transverse, feebly rounded in front, mandibles small, not prominent; eyes lateral, convex, partially divided by the canthus, not very finely granulated ; palpi short, last joint nearly conical. Antennae as long as the head, 9-jointed ; 1st joint about two-fifths of the whole length, elongate triangular, outer edge subsinuate, inner edge angulated beyond the middle; 2d joint neai ly as wide as the widest part of the 1st joint, rather wider than long, 3—5 smaller, nearly equal in length, but gradually a little nar¬ rower, 6th transverse, triangular, inner angle acute, 7th to 9th larger, forming a loose club, as long as the other joints (except the scape) united; the 8th joint is wider, and the 9th longer than the others, the latter obtusely rounded at tip. Prothorax produced over the head into an obtuse lobe ; sides dilated and rounded in front, narrowed towards the base; disc uneven, with large impressions and obtusely elevated lines, the most conspicuous being a large media’, rhomboidal imptession, extending almost from tip to base. Elytra wider than prothorax, gradually wider behind, and obtusely rounded; suture, margin and three costae elevated, separated by two rows of quadat*. punctures; between the outer costa and the margin is a large tuber¬ cle about one-third from the base; there is also a broad oblique trans¬ verse impression behind the base, which interrupts the 2d costa.
I rosternum very short in front of the coxae which are transverse and contiguous; middle and hind coxae also contiguous; legs roughly and densely punctured; tibiae moderately slender, feebly delated, without spurs; tarsi short (hardly one-third the length of the tibiae), appar¬ ently 4-jointed, claws small.
1 he abdomen is deeply withdrawn in the cavity of the elytra; it is flat, and I can see but four ventral segments, the last is rounded at tip, and vaguely impressed each side; there may, however, be five segments, the 1st being invisible on account of the prominence of the metasternum and the contraction of the abdomen.
The genus is named in allusion to the resemblance in form of the prothorax to that of Sepidium. The characters are altogether anoma¬ lous, but seem to resemble those of Iljdrophilidse. rather than any other family, approaching more nearly perhaps to Ochtkebius.
48
J. L. LECONTE, M. D.
Ji. costatum. — Ovate convex, brown, opaque; prothorax produced m front over the head, dilated at. the sides, narrowed behind, with several im¬ pressions and obtusely elevated lines, at the middle with a large elongate rhoin- boidal impression; elytra finely rugose, with suture, margin and three discoidal cost® elevated, an oblique discoidal impression behind the base, and a large tubercle near the side in front of the middle ; interspaces with two rows of small quadrate punctures. Length 2 mm; .075 inch.
Texas; Mr. G. W. Belfrage. Though not found on the Pacifio Slope of the continent, the characters are so extraordinary that 1 have included this species in the present paper as a proper companion to the other singular forms which are here described.
TlUr»ONlKlIS Mills.
T. C’rofHiii. — Dark chestnut-brown, shining, depressed, head and pro¬ thorax sparsely punctured, the latter one-half wider than long, narrowed and rounded on the sides in front of the middle, tip emarginate, base truncate, hind angles rectangular, disc feebly channelled with a large shallow coarsely punctured basal triangular impression each side; elytra twice as long as the prothorax, each with six deep strongly punctured strife, the seventh is fainter, abbreviated in front about one-fifth from the base, and the eighth does not reach the middle; abdomen sparsely punctured. Length 4.5 mm.
Vancouver Island and Sierra of California ; under pine bark. The characters of this genus, so peculiar as almost to warrant its estnbl sh- nient as a separate tribe, have been fully pointed out by Mr. Kraatz (Ins. Peutschl. ii., 805), and the question of its affinities need not be here discussed. In comparison with the figure of the European T. Mcllj/i, given by Duval (Gen. Col. Ear. ii., pi. 23, f. 113), this species differs conspicuously by the prothorax being transverse, and more rounded on the sides before the middle, the color is also less blackish and more testaceous, and the abdomen longer and narrower.
T. caelatus. — Brown, shining, depressed; head deeply punctured, trans¬ verse frontal impression strongly marked, neck smooth; prothorax coarsely and sparsely punctured, punctures more dense in the triangular shallow basal impressions, anil more distant each side of the dorsal channel, which is deep, but does not extend to the base; behind it is a vague V-sbaped impression, sometimes obsolete ; elytra with close set rows of large punctures, which do not form grooves or striae (as in the preceding species) ; abdomen strongly but not coarsely punctured. Length 18 inch; 4.5 mm.
Sierras of California, under pine bark ; abundant. This species does not differ in size or form from the preceding, but is easily known by the much coarser sculpture. The prothorax is less transverse, being perhaps one-third wider than long, and more broadly rounded on the sides. It differs from T. Mellyi (according to the figure above cited), by the elytra uot wider the prothorax, and by the longer ab¬ domen.
AMERICAN COLEOPTERA.
49
ZAIiOKIUS, n. g. ( Oxytdini .)
Body elongate depressed, opaque; head large, prolonged behind the eyes, suddenly and moderately constricted at base; mandibles slender, curved, acute, armed with a large acute tooth ; labrum not emargin- ate; maxillary palpi very slender, last joint more than twice as long as the preceding; antennae not geniculated, 11-jointed, 1st and 2d joints thicker, the 1st pyriform, the 2d globose; 3d one-half longer than the 4th, very slender, 4 — 6 equal in length, slender, 7 — 10 tri¬ angular, gradually slightly wider, 11th oval, somewhat obtusely pointed, not as large as the 10th; eyes small. Prothorax with nar¬ row apex, very suddenly and strongly dilated on the sides, acutely angulated and subspinose, then rapidly narrowed with a concave out¬ line, base broadly rounded, not wider than the tip; disc with two faint dorsal grooves, a broad anterior impression and one on each side, side margins distinctly reflexed ; elytra quadrate, emarginate at base humeri rounded, tip squarely truncate, sides distinctly margined, with traces of lougitudinal lines, abdomen broadly margined at the sides, gradually narrowed and pointed behind, less than twice as long, as the elytra; anal appendages short, with a short terminal bristle. Legs slender, tarsi rather short, 5-joiuted, joints 1 — 4 gradually a little shorter, 5th longer than the two preceding united.
Z. spiuicollis. — Depressed, dull black without lustre, densely conflu- ently puuctured ; elytra with faint traces of longitudinal elevated lines; outer joints of antennae, palpi and tarsi brownish. Length 5.6 mm.
Vancouver Island ; in moss exposed to dripping water. The body is entirely without lustre, except on the abdomen, which is slightly shining and less densely punctured. 1 have not dissected this insect, so that the description of the mandibles indicates only what is seen beyond the labrum. It belongs to the group Co^rophili of the Oxytelini.
TRICIIOYYX Chaudoir.
T. striatus. — Chestnut-brown, shining; head with the usual deep angu¬ lated impression, and two large fovese between the eyes; prothorax with a fine dorsal groove dilated into a fovea near the tip, which it does not reach, crossed near the base by a deep transverse groove, which is dilated each side near the hind angle; sides much rounded in front, narrow behind the middle; elytra wider than the prothorax, not convex, sparsely punctured, with a very deep sub-sutural stria, two approximate discoidal striae from base for three- quarters the length, and a short groove from the humerus; humeral plica ele¬ vated; abdomen smooth, narrowly margined. Length .08 inch; 2 mm.
Vancouver Island. The antennae are stout, scarcely reaching the
(7) MARCH, 1874.
TRANS. AMER. ENT. SOC.
50
J. L. LECONTE, M. D.
base of the prothorax, with the joints rounded, 1st and 2d thicker, 3d — 8th nearly equal, 9th and 10th gradually a little larger and trans¬ verse, 11th large, oval, obtusely pointed.
TYCIIUS Leach.
T. cognatns. — Dark brown, sparsely pubescent; elytra, feet and anten¬ nae paler, the latter with joints 3 — 8 rounded, equal, ninth and tenth larger also rounded, 11th as long as the two preceding, oval, pointed; prothor- rax with a very small narrow fovea near the base, convex, a little longer than wide; elytra convex, with the discoidal stria extending about half the length. Length .0(5 inch ; 1.5 mm.
Vancouver Island. Of the same size and form as the Californian T. tenellus Lee., but differs by the 9th and 10th joints of the anten¬ nae being larger, about twice as wide as the 8th.
DERMESTES Linn.
I>. siguatus. — Elongate oval, convex, blackish-brown, clothed with brown pubescence, which is more dense from the base of the elytra backwards to behind the middle; near the base on each is a small dark angulated mark composed of three spots. Length .22 — .32 inch; 5.6 — 8 mm.
Widely distributed in Northern and Western America; Hudson Bay Territory, Vancouver Islaud and California. Quite distinct from D. lardarius by the uniform brown color of the pubescence, and by the finer punctuation of the upper surface; the dense pubescence of the elytra sometimes extends nearly to the tip; in other specimens only a little behind the middle, but in all it is prolonged on the disc farther than at the suture and side.
TROGODERH4 Lc.tr.
T. Relfragei. — Elongate, subcylindrical, black, clothed with scattered grayish-white hairs; head and prothorax very densely, elytra less densely though rather closely punctured, with two narrow undulating bands of white and fulvous hair, the 1st about one-quarter from the base, the other one-quar¬ ter from the tip, base of antennae, tibiae and tarsi brown. Length .22 inch ; 5.5 mm.
Texas; Mr. Belfrage, one specimen. Much more elongate than our other species. The club of the antennae is perfoliate, composed of five joints, aud is about as long as the preceding joints united.
K A I, I SSL'S, n. g. (Micropeplidce.)
Bedy smooth, shining, sides of prothorax broadly flattened, elytra with two pairs of approximate striae widely separated behind converg¬ ing towards the base; abdomen conical not margined; mesosternum moderately wide, deeply excavated for reception of the prosternum ; metasternum with an oblique impressed line (somewhat as in Cocci- nulla), epimera large, visible as a triangular sp‘ce at the sides behind.
AMERICAN COLEOPTERA.
51
This remarkable insect has the form and all the essential characters of Micropeplidse (9-jointed antennae with solid club, 3-jointed tarsi, widely separated hind coxae, etc.), but differs remarkably by its sculp¬ ture; the elevated lines of the head, prothorax and abdomen are quite absent, and the costae of the elytra are represented by only two pairs of impressed Hues which converge towards the base, with interspaces becoming slightly elevated. The antennae are longer and more slender than in Micropeplus.
The last ventral segment in the % is longitudinally impressed, the middle and hind tibiae are bent inwards near the tip.
K. nitidus. — Broadly oval, rounded in front, obliquely narrowed behind the elytra; head with a triangular impression on the vertex, connected with a transverse frontal line; prothorax strongly narrowed in front, twice as wide as long, rounded on the sides, bisinuate at base, hind angles not rounded, disc smooth, very convex, sides very broadly depressed, alutaceous; elytra with two pairs of lines converging towards the base, interspaces costiform at the base, but becoming flat behind; disc convex, apical margin depressed, humeri not rounded; abdomen with five exposed segments, smooth, conical, not mar¬ gined, about two-thirds as long as the elytra. Length 1.5 mm.
Vancouver Island; Mr. Crotch. On pebbly margins of a small lake near Gold Stream, in July.
GEORYSSUS Latr.
G. californicnS.— Dull black, prothorax finely channelled, a little longer than wide, anterior lobe separated by a more distinct transverse impression than in G. pumilus Lee., and more deeply rugose ; elytra with rows of quad¬ rate punctures which are narrower than the intervening spaces. Length .07 inch ; 1.8 mm.
California; Dr. Horn. This species is mentioned in Mr. Crotch’s Check List, from the collections of Dr. Horn and myself, but has not been described. It is quite distinct from G. pumilus by the smaller and more distant rows of punctures of the elytra. The last named species has an extensive range, being found in Kansas, Canada and Massachusetts.
THROSCINUS, n. g.’ ( Parnidce .)
Body elongate oval, obtuse at each end, clothed rather densely with short suberect pubescence. Head protected beneath by a large lobe of the prosternum ; eyes oval, rather finely granulated, not hairy ; an¬ tennae inserted in front of the eyes, Il-jointed, slender, nearly as long as the prothorax; 1st and 2d joints stouter, not longer than the 3d and 4th united, which are slender, 5th a little wider and shorter, 6 — 10 a little wider, subtriangular, 11th oval, not longer. Palpi with
52
J. L. LECONTE. M. D.
the last joint oval, acute. Prothorax wider than long, gradually nar¬ rowed from the base forwards, transversely very convex in front, base bisinuate. Scutellum rather large, triangular. Elytra convex, not wider than the prothorax, punctures fine, not arranged in rows. The other characters present nothing worthy of record.
T. Crotcliii. — Black with a bronze lustre, finely pubescent with short suberectgray hair, finely and sparsely punctulate. Length .10 inch ; 2.5 mm.
A singular insect found by Mr. Crotch, at San Diego. Differs re¬ markably from Lutrochus , to which it is otherwise allied, by the longer and slender antennae and elongate form of body. It bears a general resemblance to Throscus , in appearance.
ELMIS Latr.
E. «liv ergens. — Elongate oval, dark green-bronzed, finely pubescent : prothorax one- half wider than long, gradually narrowed and rounded on the sides from the base, disc convex distinctly punctured, basal lines extending as far as the middle, slightly divergent outwards, base emarginate in front of the scutellum, not foveate; elytra elongate scarcely wider than the prothorax, nearly parrllel on the sides and strongly margined, disc convex, striae com¬ posed of close set quadrate punctures, scarcely finer at the apex, interspaces obsoletely punctulate; tarsi brownish- Length .10 inches; 2.5 mm.
California; Mr. Crotch. Narrower than K. ovalis , with the sides of the elytra nearly straight; quite distinct from all other species I have seen by the basal lines of the prothorax diverging outwards.
E. corpulent us. — Ovate, convex, thinly and finely pubescent, greenish- black; prothorax somewhat wider than long, feebly channelled, scarcely punc¬ tulate, narrowed and rounded from the base, front angles deflexed and broadly impressed, basal lines extending to the middle, very deeply impressed, not divergent, base emarginate in front of the scutellum, not foveate. Elytra wider than prothorax, very convex behind, much rounded on the sides, striae deep, punctured in front, finer and less punctured behind ; interspaces feebly punctulate. Length .10 inch ; 2.5 mm.
British Columbia; Mr. Crotch. In one specimen the elytra have a broad basal band and large apical spot yellow; the antennae joints 1 — 8 and the legs are also testaceous.
E. seriatus. — Elongate oval, black with a greenish reflection; prothorax wider than long, distinctly punctured, narrowed, and feebly rounded from the base, basal lines extending to the middle, with a fovea near the anterior ex¬ tremity of each, base with two small fovese near the scutellar emargination. Elytra scarcely wider than the prothorax, nearly parallel on the sides, not very con vex, striae composed of oval rather distant punctures, interspaces obsoletely punctulate; a large indistinct subhumeral yellowish blotch extends to the sides but not to the suture, last joint of tarsi yellowish. Length .075 inch; 1.8 mm.
AMERICAN COLEOPTERA.
53
One specimen, California; Mr. Crotch. Narrower than E. 4-macirfatus Horn, and quite different by the elytral striae not im¬ pressed and more distantly punctured.
E. foveatus. — Elongate, black; prothorax longer than wide, feebly nar¬ rowed in front, subsinuate on the sides, discoidal lines entire sinuate, disc with a deep oblique impression, a broad transverse one and a large medial fovea; elytra with strise composed of large approximate punctures, 4th and 6th interspaces feebly carinate, the former extending three-quarters the length of the elytra. Length .08 inch ; 2 mm.
Two specimens without locality collected by Mr. Crotch. Allied to E: pmil/m Lee., and similis Horn, but differs by the less strongly carinate elytra. It is also a larger and less elongate species with the medial fovea of the prothorax more distinct from the transverse im¬ pression.
E. vulneratus. — Rather stout, brownish-black, slightly pubescent; pro¬ thorax feebly punctulate, scarcely longer than wide, slightly narrower in front, broadly rounded on the sides, discoidal lines entire, posterior impressions nearly transverse, scarcely oblique, feebly separated at the middle, base bi- foveate near the scutellum; transverse impression deep entire, disc in front convex; elytra at base wider than the prothorax, sides nearly straight, then obliquely narrowed and slightly prolonged at tip, striae rather finely punc¬ tured, interspaces sparsely punctulate, 4th and 6th finely carinate ; antennse and legs dark testaceous. Length .08 inch ; 2 mm.
Texas; Mr. Belfrage. One specimen. Not quite so stout as E. ova/is , but nearly so.
E. caesus. — Elongate, parallel, testaceous, shining, slightly pubescent; head somewhat darker, prothorax scarcely longer than wide, nearly smooth, sides finely erenate, nearly straight in front; rounded near the hind angles, discoidal lines not very deep, obliterated in front, transverse impression very deep, disc convex before and behind; elytra very little wider than the pro¬ thorax; striae composed of large punctures, becoming smaller and obliterated towards the tip, 6th interspace scarcely carinate. Length .06 inch; 1.3 mm.
Texas; Mr. Belfrage. A very distinct species of uncommonly small size.
PACIIYPEECTRUS, n. g. (. Hybosorini .)
Body ovate, convex, sides and under surface setose with long erect hairs, above smooth and glabrous. Mandibles broad, outer edge sharp, not rounded but obtusely angulated, labrum short rounded in front. Antennae with the 1st joint of the club completely surround¬ ing the others; eyes not divided, nientum not emarginate; head with a broad sinuated transverse impression and a frontal tubercle; pro¬ thorax wider than long, narrower in frout, nearly smooth, finely mar¬ gined at tip, sides and base; elytra very convex, gradually a little
54
J. L. LECONTE, M. D.
wider than the prothorax, then obtusely rounded ; smooth with a deep sutural stria and two marginal striae which are abbreviated in front, the inner one being fainter and shorter. Legs very stout, front tibiae three-toothed, Dot serrate; middle and hind tibiae thick, with the transverse crest and apical margin well developed; spurs of middle tibiae long, of the hind pair short, broad and obtuse, the outer one being the larger. Tarsi, front as long as the tibiae, slender, joints 1 — i equal; middle shorter than the tibiae, joints 1 — 4 decreasing a little in length ; hjnd pair only half the length of the tibiae, stouter, joints 1 — 4 slightly decreasing in length; claws slender, simple.
1*. lnevis. — Chestnut-brown, shining; head with a frontal tubercle and transverse broad impression; prothorax and elytra smooth, the latter with a deep sutural and two marginal strise; margins of body, under surface and legs clothed with long erect hairs. Length .26 inch; 6.5 mm.
One specimen, Sta. Barbara, California; Mr. Crotch. Remarkably different from all the species of the tribe thus far described by the absence of the elytral rows of punctures.
PEMDXOTA M’Leay.
P. liigubris. — Black, with a feeble metallic tinge; prothorax sparsely punctured, more finely and densely towards the sides, which are rounded narrowed in front of the middle, but only slightly so towards the base, angles rectangular, slightly prominent; elytra dull, finely alutaceous, with scarcely perceptible traces of distant rows of punctures. Length .7 — .9 inch; 17.8 — 22.7 mm.
£ . — With the front tarsi thickened, the inner claw dilated at base, and the club of the antennae longer.
Arizona; Mr. C. V. Riley; also in the collection of Mr. Ulke. Related to 1J. Lucse , but quite different by the nearly black color, the more finely punctured prothorax, which is less rounded on the sides, and less narrowed towards the base, and finally by the rows of punc¬ tures on the elytra being almost obliterated. The head is alike in both species, densely punctured, with the clypeus narrowly margined, and at the tip subtruncate, a little more distinctly so in the preseut species.
CIIEJIASTOCIIILUS Knoch.
C. retractus. — Brownish-black, not shining; prothorax wider than long, coarsely punctured, narrowed in front, broadly rounded on the sides, foveate, i»9ide of the front angles, fovese not extending to the apical margin, hind an¬ gles suddenly and strongly retracted, acute, surrounded by a deep groove; elytra flattened, with the usual sculpture of large shallow punctures, not closely placed. Length .44 inch; 11 mm.
Texas; Mr. Belfrage. One specimen. The menturn is deeply aud
AMERICAN COLEOPTERA.
55
broadly incised behind. This species is allied to C. canaliculatus, but the prothorax is more convex, the foveae adjacent to the front angles do not extend to the apical margin and the hind angles are much re¬ tracted, so that the base is fully one-fourth narrower than the middle of the prothorax, as in C. varidosmx to which it in other respects has no resemblance.
C. crinitns. — Brownish-black, not shining, thinly clothed above with very long yellowish hairs; prothorax rather flat, very coarsely punctured, sides rounded, subsinuate towards the base, hind angles rather large, elevated, smooth, circumscribed by an impression, inside of the front angles is a fovea extending to the apical margin; elytra flattened, with the usual sculpture and traces of broad longitudinal grooves. Length .5 inch; 13 mm.
One specimen, Utah ? The mentum is obtusely pointed behind, and not incised. This species is related to C. Knock'd , but the larger hind angles of the prothorax, the more broadly rounded sides, which are distinctly crenate. the less convex disc, and a’bove all the long hairs distinguish it at first sight. The legs are as in C. Knochii.
SCAPTOLEKUS Lee.
S. estriatus. — Brown, pubescent, hairs on prothorax, base of elytra and breast longer; elytra rather finely and densely punctured, without any appearance of striae. Length .53 inch; 13 mm.
One immature specimen from Texas. Very different from S. Le- contei Salle ( femoral is | Lee.), by the elytra having no vestige of striae; otherwise it resembles that species, but is smaller, with the prothorax broader and the 3d joint of the antennae more than one- half as long as the 4th.
In the Mexican S. femorald the elytra are striate, but the protho¬ rax is still broader and much more rounded on the sides, and the 2d and 3d joints of the antennae are nearly equal, together a little more than one-half as long as the 4th.
BRACIIYPSECTRA, n. g. ( Rhipiceridce .)
Body elongate, rather flattened, shining, punctured and pubescent; elytra strongly margined, feebly striate; head moderate, front convex, and mouth inflexed ; labrum smaP, mandibles not prominent, palpi small and slender; antennae inserted in triangular excavations, not distant, 11-jointed, joints 1 — 4 subequal, 3d a little longer, 5 — 10 tri¬ angular, transverse forming a serrate elongate mass, 11th larger, ap- pendiculate, eyes large, oval, finely granulate ; prothorax transverse, trapezoidal, side margin distinct, hind angles acute subcarinate; pros¬ ternum broad, feebly rounded in front, distinctly prolonged behind
56
J. L. LECONTE, M. D.
the coxae, inflexed and received into the excavated mesosterum ; front coxae transverse, without distinct trochantin, side pieces of meso- sternum extending to the coxa), which are subquadrate, not promi¬ nent and separated by the narrow mesosternum ; side pieces of meta- sternum rather wide, parallel; bind coxae extending nearly to the side margin, narrow, feebly sulcate behind, coxal lamina almost ob¬ literated; abdomen with five free and equal ventral segments; legs slender, spurs very small, tarsi as long as the tibiae, slender, last joint without onychium, claws simple; epipleurae narrow, extending to the apex; scutellum rather large, rounded behind.
A genus of difficult position, having a general resemblance to Zenon , but somewhat broader, with the mouth more inflexed, and the mandibles smaller. It differs, moreover, from the other genera of the family to which I have referred it, by the absence of onychium, and by the trochantin of.the front coxa) being indistinct. It also differs more essentially by the prosternum being prolonged behind the coxae, into an inflexed point received into an excavation of the mesosternum. It cannot be referred elsewhere in the series, unless it be to the tribe Eubriini of DasnjUidse, to the species of which it has no resemblance in appearance, nor in the more special characters.
15. I'll I YU. — Yellowish-brown, shining ; head punctured, feebly chan nelled, transversely impressed between the eyes; prothorax transverse, trapezoidal, punctured, feebly channelled, hind angles prolonged, acute, subcarinate ; elytra slightly wider than the prothorax, strongly margined, punctured, feebly striate, obtusely rounded behind ; beneath shining, finely punctured and pubes¬ cent. Length .20 inch; 5 mm.
Texas; Mr. Belfrage. No sexual differences observed.
AKAEOPUS, n. g. (Das a/llidce.)
Body elongate, oval, convex, rather acute before and behind, finely punctured, densely clothed with prostrate hair. Head deflexed, mod¬ erate in size, front convex, with the transverse suture distinct, epistoma entirely corneous. Mouth rather prominent; labrum con¬ vex, broader than long, rounded and feebly emarginate in front. Mandibles curved, acute at tip, visible beyond tbe labrum. Antenme inserted upon the front at the sides behind the base of tbe mandibles, but not uuder a prominence, 1 1-jointed, rather stout, extending a little beyond the base of tbe prothorax, subserrate; 1st joint stout, shorter than 3d; 2d globose, 3d subtriangular a little longer than the 4th; 4 — 1U equal in length; 11th a little longer; eyes rounded, finely granulated; maxillary palpi not dilated, last joint a little longer;
AMERICAN COLEOPTERA.
57
labial with last joint somewhat triangular; ineutum large, trapezoidal. Prothorax wider than long, very much narrowed in front, rounded and overhanging the head at tip, rounded on the sides near the hind angles, which are acute; base bisinuate. Scutellum . rounded, con¬ cave. Elytra a little wider at base than the prothorax, rounded at the base, slightly enlarged for two-thirds the length, then obliquely narrowed; side margin distinct, wider towards the tip; striae faint, the sutural deep towards the base. Prosternum narrow, prolonged behind the coxae, and received into the mesosternum, which is trian¬ gularly incised in front and rather narrow between the coxae. Front coxae transverse, prominent, with large trochantin; middle coxae with narrow trochantin extending to side pieces; hind coxae laminate, gradually dilated inwards. Abdomen with the 1st ventral shorter and the 5th longer than the others which are equal. Legs slender, tarsi not lobed, a little shorter than the tibiae, joints 1 — 4 equal, 5th equal to the three preceding united, claws simple, onychium not visible.
Were it not that the front coxae and insertion of the antennae for¬ bid, this insect would be referable to the Eucnemulse , to which family it has much resemblance in appearance.
The affinities are of course with Lichas and Stenocolus. From both it differs by the more convex front, the less elongate and less serrate antennae, the more prominent front coxae, the less prolonged excava¬ tion of the mesosternum and the 1st ventral segment much shorter; it differs besides by the prothorax being produced over the head, and not margined at the sides. In Lichas moreover the onychium is con¬ spicuous, and in Stenocolus there is a series of smooth oblique sears on each side of the ventral segments.
A. monachus.— Blackish-brown, densely clothed with short yellow- brown pubescence, very finely punetulate; prothorax with two round basal fovese, between which the base is depressed; elytra faintly punctured in strire, sutural stria deep for one-quarter the length from the base. Length 4 inch • 10 ram.
Oiegon ; Lord Walsingham. The basal fovete of the prothorax are nearer together than to the sides.
D ICRARfOPSEIiAPHUS Gueriu.
Edwarclsii. Broadly ovate, not very convex, finely pubescent, black; elytra testaceous with feeble grooves which are irregularly punctured, interspaces as wide as t.he grooves, nearly smooth; prothorax bisinuate at base, much wider than long, sides and tip rounded in the arc of a circle, mar¬ gin concave, reflexed, transparent and white along the front as far as the mid¬ dle; scutellum large, black; legs brownish testaceous; antenna black, second joint very small. Length .22 inch; 3—4.3 mm.
(8)
TRANS. AMER. ENT. SOC.
MARCH, 1874.
53
J. L. LECONTE, M. D.
% . — With the 3d and following joints of the antenna bearing a long process, which is basal in the 3d, medial in the 4th and 5th, but nearly apical in the others.
9 . — Larger and stouter, elytra nearly black, antennae serrate.
Found abundantly by Mr. Crotch, at Santa Barbara, flying about bushes near a stream. Of thirty-three individuals before tne thirty are males and only three females. The larva is subaquatic, and ac¬ cording to .Mr. Crotch resembles in appearance those of Psejdumus and Helichus. I have adopted the name affixed to the species by Mr. Crotch in honor of Mr. Henry Edwards, of San Francisco.
MICRO PHOT US Lee.
M. suigustiis. — Elongate, brown testaceous, elytra darker, roughly and densely punctured, elevated lines distinct, sides concave and broadly mar¬ gined near the base; scutelluin and prothorax pale, the former channelled, the latter rough longer than wide, truncate at base, rounded in a semiellipse on the sides and tip. disc broadly convex in front, margined very broadly at tne sides, and more narrowly at the tip. Length .58 — .4 inch; 7 — 10 mm.
■J, . — Eyes very large, convex, approximate, palpi long; antennae 9-jointed, 9th joint with a small subulate point at tip; elytra long, entire; last dorsal segment bisinuate at tip, last ventral produced into a long process at tip; geni¬ tal segment with slender lobes. *
9- — Eyes small, distant, head narrow, palpi less elongate; antennae 8-jointed with a small terminal subulate protuberance; elytra entirely wanting, the scutum of the mesothorax being an undivided plate; apical process of last ventral short.
Mariposa, Oregon ; Dr. A. Theveuet. This species though much narrower in form, is similar in sculpture to M. dUatatus Lee., from Lower California. The female of the last named species is unknown, so that the discovery of that sex in the present instance is more im- portnat. The difference in the number of antennal joints is a remark¬ able and hitherto unknown character in the family.
MATIIETEUS, n. g. (Lampi/j-idce.)
Body not convex, rather Lyciform, above confluently punctured, strongly margined. Head concealed under the prothorax, short and broad, eyes distant, convex, moderate in size, flucly granulated ; an¬ tennae inserted just in front of the eyes, distant, 11-jointed, strongly pectinate, 1st joint triangular, hardly longer than wide, 2d shorter, as wide as long, 3d triangular, inner angle acute; 4 — 10 triangular, each with an internal process as long as the joint and arising about the middle, or beyond the middle; 11th joint flat, acutely sinuate near the tip, which is also acute. Front concave behind the antennae, convex in front of them ; labrum transverse, broadly rounded iu front, dis-
AMERICAN COLEOPTERA.
59
tinctly separated from the front. Mandibles acute; palpi moderate, maxillary longer, last joint subtridngular obliquely rounded at tip. Prothorax transverse, lateral and apical margin very wide and re¬ flexed, irregularly rounded, base broadly rounded, hind angles obtuse, rounded. Scutellum triangular, small, rounded behind. Elytra with rounded humeri, wider from the base for three-quarters the length, then broadly rounded, disc rather flat, with four narrow elevated lines, suddenly declivous near the humeri, side margin broad and re¬ flexed ; epipleurse wide. Front coxae conical contiguous; middle coxae quadrate, not large, contiguous; hind coxae narrow, transverse, contiguous. Legs slender, not compressed, trochanters on the inner side of the thighs, tarsi with the joints 1 — 4 gradually shorter, 3d and 4th slightly lobed beneath, not emarginate, 5th slender, claws feeblv dilated near the base. Abdomen ( 9 ) with seven ventral segments, 7th smaller, rounded at tip; last dorsal broadly rounded at tip; geni¬ tal segment not prominent ; no phosphorescent spots.
A singular genus, which must be placed probably near Calyptor.e- phalus, but differing from it as from all Lampyrim by the widely dis¬ tant antennae, broader mouth and better developed labrum.
M. Theveneti. — Black, without any tinge of brown; prothorax and .elytra dull orange, the former with two approximate smooth spots, occupying the disc, and separated by a narrow dorsal channel, margin punctured; elytra densely and roughly punctured, with four fine elevated lines, the third of which commences on the humerus which is very prominent. Length .45 inch ; 11 mm.
One 9 collected at Mariposa, Cal., by Dr. A. Thevenet, and kindly given me by his brother, Mr. J. Thevenet, of Paris.
PHENGODEUi Hoffm.
P. integripennis. — Ferruginous yellow, elytra blackish-brown, finely pubescent and scabrous, as long as the abdomen, rounded at tip, not dehiscent, Sides with narrow reflexed margin. Length .65 inch; 11 — 16.5 mm.
California. I have seen several males of this species, which resem¬ bles in all characters, except the length of the elytra, our two Eastern species. The labrum is, however, more suddenly and deeply emargin. ate, and the seventh ventral is rather cleft than emarginate, with a short obtuse process at the base of the cleft.
9IASTINOCERUS Holier.
M. texanns. — Testaceous, abdomen dusky except at tip, opaque pubes¬ cent; head as wide as the prothorax, finely and densely punctured; prothorax a little longer than wide, front angles rounded, hind angles rectangular, finely and densely punctured; elytra one-third as long as the abdomen, dehiscent, rounded at tip. Length .25 inch; 6 mm.
60
J. L. LECONTE, M. D.
Texas; Mr. Belfrage. Female unknown. Varies of a blackish color with the occiput ami tip of abdomen testaceous. After examin¬ ing the type of Mastinocerus , in the Paris Museum, I see no reason for separating this as a distinct genus. In the Chilian type the last joint of the antennae has been broken off, and the 10th joint, by want of sufficient care has been regarded as the last joint, which has been, therefore, absurdly described as bifurcated, a form which I am . free to say that our present knowledge leads us to 'believe does not exist in Coleoptera. In the Texan species above described the antennae are 11-jointed, the 1st joint as long as the ^d and 3d, which are sim¬ ple, the joints 4 — 10 slightly increasing in length, each with two long basal hairy cylindrical processes, about three times as long as the joint itself; 11th joint simple, as long as the branches of the 10th joint ; maxillary palpi nearly as long as the head, last joint large, moderately dilated with the palparium elliptical; eyes large, finely granulated. The seventh ventral segment is emarginated almost to the base ; the last dorsal is subtruncate or broadly rounded, with two shallow longitudinal furrows.
SII,IS Charp.
The following table will enable the species of this genus to be easily distinguished; 8 and 9 may be perhaps variations in color of one species.
A. — Base of prothorax broadly rounded, sides excavated into a deep round
cavity near the base; both angles of the excavation acute; ante basal ap¬ pendage acute, spinifortn . 1. spinigera.
B. — Base of prothorax lobed, excavation of hind angles partly basal, angles
therefore not very distinct, though acute, anterior margin of excavation sinuate with two prominent rounded angles; ante-basal appendage acute, spiniforrn, directed obliquely backwards.
Basal excavations of prothorax moderate, (color black, disc of prothorax yel¬ low) . ;. . 2. dillicilis.
Basal excavations of prothorax larger (elytra and prothorax pale).
3. flavida.
C. — Base of prothornx lobed, deeply foveate, inside of the hind angles, which
are therefore more prominent and acute; incisure near the base moder¬ ately deep, with the anterior angle rounded; ante-basal process com¬ pressed, rounded at tip.
Basal impressions of prothorax very deep, hind angles strongly carinated
(upper surface pale).
Incisure of hind angle deep, appendage straight . 4. cavil.
Incisure of hind angles broad, appendage curved . 5. pallida.
Basal impressions of prothorax much smaller; hind angles feebly carinated ; (black, prothorax more or less yellow).
AMERICAN COLEOPTERA.
61
Incisure of hind angles deep, appendage long . .... 6. percomis.
Incisure of hind angles shallow, appendage short . 7. vnlnerata.
IX — Base of prothorax not lobed, broadly reflexed, as usual; excavation en¬ tirely lateral, anterior angle of incisure nearly rectangular, bind angle long, acute, produced into a slender filament which is bent forwards.
Elytra and prothorax pale, the latter sometimes with a black vitta.
8.
Black, prothorax yellow, sometimes with a black dorsal vitta... 9. filigera.
S. spinigera. — Elongate, testaceous, head, antennas, elytra towards the tip, and legs more or less dusky; prothorax smooth, shining, wider than long, convex, strongly margined, deeply excavated and emargina'te each side near the base, angles before and behind the emargination acute ; armed in addition with a slender sharp spine near the hind angles; elytra finely scabrous and pubescent; antennae with the 2d joint small, 3d equal to the 4th. Length .28 inch ; 7 mm.
One £ Oregon. The basal excavations of the prothorax are large, deep and rounded.
S. flavida. — Elongate, black, prothorax, elytra and feet yellow, the former nearly twice as wide as long, sides straight oblique, front margin broadly rounded, feebly reflexed, disc convex, hind margin blackish strongly d;pressed and reflexed, deeply foveate each side; hind angles very deeply in¬ cised, anterior process narrow acute; elytra dusky towards the tip and sides, finely not deeply punctured; tarsi and hind thighs dusky; antennae black ( ) as long as the body, 2d joint small, 3d and following ones equal. Length
6 mm.
Two £ , California, at Lake Tahoe. Similar in appearance to S. pallida , but quite different by the deep incisure of the hind angles of the prothorax ; penultimate ventral segment, as usual, deeply and widely emarginate.
S. cava. — Elongate, pale testaceous, prothorax much wider than long, sides oblique, deeply emarginate near the base, angle in front of emargination well defined, obtuse, basal angle produced into a compressed process which is rounded at tip; disc strongly margined, deeply channelled, very deeply exca¬ vated at the base each side; elytra finely scabrous and pubescent; occiput blackish; antennae and legs more or less dusky, the former slender with the 2d joint small, 3d equal to the 4th. Length .2 i nch ; 5 min.
Cue £ , Oregon. Smaller than pallida with the sides of the prothorax oblique not rounded and the basal fovese much deeper.
S. vnlnerata. — Less slender, black, prothorax strongly margined, broad¬ ly rounded on the sides, broadly excavated each side at the base, emargination not very deep, angle in front obtuse, basal angle obliquely carinate, process short and rounded; disc feebly channelled with a reddish-yellow round spot each side; elytra finely scabrous and pubescent; antennse short, 2d joint small, 3d equal to the 4th. Length .25 inch ; 6 mm. •
G2
J. L. LECONTK, M. D.
One £ , Oregon. Very distinct by the short obtuse process of the hind angle of the prothorax.
S. luteal Lee., Jonrn. Acad. Nat. Sc. 2d, v. SSI ; pallens || Lee., Proc. Acad. Nat. Sc. Phila., v. 339.
This species which has been incorrectly placed as a synonym of & pallida Mann, is smaller and different by the antennae being stouter, and the process of the basal angle of the prothorax longer filiform and bent just as in S- fiHger a.
S. pallida Mann, differs essentially by the basal excavations of the prothorax being separated from the emargi nation by an elevated ob¬ lique line which runs to the hind angle so as to render it carinate ; the angle in front of the emargination is obtuse and the process be¬ hind the emargination is very near but separate from the small hind angle, compressed, deflexed and curved ; sides broadly rounded. The antennae are slender.
<*». liligerjt. — Elongate, black, prothorax bright yellow, shining, very con¬ vex, finely sparsely punetulate, strongly channelled, twice as wide as long, apical margin rounded, strongly refiexed, basal margin deeply excavated and strongly reflexed: hind angles incised, anterior process not truncate, hind process filiform, suddenly bent forward; elytra more strongly punctured ; an¬ tennae ( ^ ) as long as the body, 2d joint small, 3d nearly as long as the 4tb. Length 3.(5 mm.
One S , Santa Barbara, California. Narrower than S. per com is and quite different by the prothoracic characters. A specimen from Vancouver which >1 refer to this species has the front and hind mar¬ gins and dorsal spot of the prothorax black.
IHTEMNUS Lee.
I>. obtusiis. — Robust, black, prothorax twice as wide as long, smooth, sides rounded and sinuate, red, margins blackish, strongly refiexed ; elytra rather finely scabrous, punctured; antennae feebly serrate, 2d joint short, 3d equal to the following. Length 4 mm.
■J, . — Sides of the prothorax suddenly rounded, deeply incised near the base, anterior process obtuse with a small cusp projecting backwards, posterior pro¬ cess rounded at tip, base excavated each side, medial part forming a lobe more suddenly limited than in D. bidental us antennae two-thirds as long as the body.
9- — Sides of prothorax less suddenly rounded, subungulated and feebly sinuate near the base, which is not lobed, hind angles obtuse, rounded; anten¬ nae one-half as long as the body.
Los Angeles and Saucelito, California. Larger and more robust than D. bident at us, and remarkably different by the sides of the tho¬ rax being rouuded and the anterior process obtuse.
AMERICAN COLEOPTERA.
63
TRICIIODES Herbst.
T. bimaculatus.— Dark blue, pubescent with long, soft, erect yellow hair; prothorax convex, rugosely punctured with an indistinct dorsal line; elvtra thickly but not deeply punctured with a few faint traces of striae near the suture and a bright orange round spot about the middle near the side ; an¬ tennae black. Length .4 inch; 10 mm.
California and Oregon. This species has become quite frequent in collections within the last two years. It is quite distinct from T. or- natus by the prothorax more convex, less constricted in front, less narrow behind, punctured and not shining. It is in these respects more allied to T. Nutalli Kirby, and may perhaps be an extreme variation of this species. Until intermediate forms occur it will be better to distinguish it by a separate name.
LEBiSIKLLl Spin.
Ij. maculicollis.— Dark blue, clothed with erect black hairs; prothorax a little longer than wide, oval, convex, finely and sparsely punctured, shining, red with a large discoidal black spot reaching the tip but not the base; elytra coarsely and thickly punctured. Length .2 inch; 5 mm.
Mariposa, California; Dr. A. Thevenet. More elongate than L. jaiithina and quite distinct by the color of the prothorax which is longer and less punctured. The antennae are testaceous with the last four joints black ; the legs seem to be brown.
IIEDOlSff.4 Latr.
H. granosa.— Dark brown, clothed with coarse cinereous pubescence, be¬ coming brownish at the middle of the prothorax, which is compressed and ele¬ vated at the middle near the base; elytra densely granulate-punctate with scattered distant, small, smooth granules; behind the middle there is on each elytron a small angulated spot with less dense pubescence; scutellum very densely pubescent. Length .17 inch; 4 mm.
California. The prothoracic elevation is suddenly declivous and almost perpendicular behind.
XESTOBIIJM Motseh.
X. afline.— Elongate, blackish-brown, very densely and finely punctulate, clothed with yellowish-brown short pubescence, twhieh in well preserved specimens is probably uniform), disc of protborax not channelled, sides not strongly flattened. Length .24 inch; 6 mm.
Vancouver and California. Resembles in form X. tesselatum, but quite different by the finer punctuation, the less broadly flattened sides of the prothorax, and by the pubescence being much finer and not arranged in tufts; the last three joints of the antennae are only one-hilf longer and wider than the 8th joint, and the 2d— 8th are much more slender than in X. tesselatum.
G4
J. L. LECONTE, M. D.
Another species of this genus was given ine by Mr. E. P. Austin, which may be here added, in order to avoid multiplication of refer¬ ences.
X. sqnali*liini. — Blackish-brnwn, very densely granulato-punctate, ir¬ regularly clothed with spots of yellowish-brown pubescence; prothorax not channelled, sides widely margined, last joints of antennae as long as the 6 — 8 united, ami about twice as wide as the 8tb. Length .19 inch; 4.fi mm.
Providence, lvhode Island; two specimens. Much smaller than X. tessctafum, but similarly punctured and pubescent; the prothorax is, however, not at all channelled and the last joints of the antennae are much larger.
VIII IjIjKTTA, ». g. ( Anobiini .)
The front coxae in this genus are contiguous and the prothorax ex¬ cavated beneath for the reception of the head, and the antennae 11- jointed, in repose received under the head, as in the other members of the group Xyletini (bee. Proc. Acad Nat. Sc. Phila., 1865, 237); the mesosternum is not advanced between the middle coxae, but is as in Xyletinus. It differs, however, conspicuously from that genus by the antennae.
These organs have the 1st joint of moderate size somewhat dilated, about two and a half times longer than wide; 2d ovate, as long as wide; 3 — 8 triangular, broader and gradually transverse in S form¬ ing an acutely serrate funiculus; 9 — 11 longer, flat, each as long as the three of the preceding ones. The elytra are striate as in Xyleti¬ nus, with a long scutellar, ten dorsal and two short lateral striue occu¬ pying the post-humeral expansion of the elytra, which is as well marked as in Xyletinus; the tip is feebly truncate and broadly rounded.
V. VIlirrayi. — Elongate, cylindrical, black, covered with very fine short cinereous pubescence ; prothorax ferruginous with a broad black apical band, siife margin broadly reflexed, disc convex, base margined each side near the hind angles, .which are rounded ; elytra with fine impressed scarcely punctured stria, each with a ferruginous spot in front of the middle. Length .32 inch; 8 mm.
One % , California, given me by Mr. A. Murray. The prothorax is finely punctured and the interspaces of the elytra nearly flat.
V. expansa. — Blackish-brown, elongate, cylindrical, covered with fine short sericeous pubescence; prothorax feebly channelled, with side margin very widely reflexed, extending upon the sides of the base, disc convex finely punctured; elytra with the stria fine, but deeper and more distinctly punc-.
AMERICAN COLEOPTERA.
65
tured and more oblique towards the base, tip more broadly subtruncate and rounded. Length .25 inch; 6 mm.
California; Mr. Crotch.
V. convex®. — Blackish-brown, elongate cylindrical, covered with fine sericeous pubescence; prothorax more distinctly punctured, convex, side mar¬ gin much narrower; elytra with the striae deeper, distinctly punctured, more oblique towards the base, interspaces convex. Length .28 inch; 7 mm.
California; Mr. Ulke and Dr. Thevenet. Differs from the two preceding by the narrower side margin of the prothorax and more convex elytral interspaces. One specimen has the elytra testaceous with dusky sides ; it is probably not quite mature.
EUCERiTOCERUS, n. g. ( Ptilinini .)
Body cylindrical, clothed with fine subsericeous pubescence, very finely punctulate, elytra with very indistinct fine striae. Head rounded, not received into the prothorax beneath, eyes rather large, finely granulated, not very prominent; palpi rather long, as in Ptili- nus , but a little stouter, last joint elongate oval ; antennas with the 1st joint nearly as long as the 3d, 2d small, 3d and following sub¬ equal, about three times as long as wide, each with an oblique basal process longer and as broad as the joint itself, except that of the 2d, which is shorter and broader. Legs slender, tarsi longer than the tibiae, 1st and 2d joints long, 3d and 4th small, 5th as long as the two preceding, claws small, distant.
A singular genus, closely allied to Ptilinus , differing chiefly by the form of the antennm, the larger and less prominent' eyes, and the longer and more slender tarsi.
E. Hornii. — Cylindrical, elongate, dark piceous, clothed with fine gray pubescence producing a leaden lustre; elytra with very fine indistinct punc¬ tulate striae; antennae and legs a little less dark in color. Length .25 inch; 4 mm.
One specimen, Texas ; Mr. Belfrage. The antennae are more than half the length of the body, the 10th and 11th joints are unfortun¬ ately broken off.
It gives me great pleasure in the name of this very interesting ad¬ dition to the fauna, to express my appreciation of the excellent labors ot my friend, Dr. Gr. H. Horn, in investigating the Coleoptera of the United States.
POLYCAON Lap.
P. plicatus. — Black, shining, thinly clothed with long erect yellowish hairs; head large, very densely and finely granulato-punctate, granules be-
TRANS. AMER. ENT. SOC.
(9)
MARCH, 1874.
66
J. L. LECONTE, M. D.
coming less dense behind ; prothorax as wide as long, convex, finely punctured, slightly narrowed behind, sides nearly straight, disc transversely impressed and feebly channelled; elytra very coarsely and sparsely punctured, each with a series of short very deep oblique grooves midway between the suture and side margin, posterior declivity oblique, flat, smooth, strongly margined with an elevated rim, suture also elevated behind; abdomen ferruginous* densely pubescent; labrum fringed with bright fulvous hair. Length .48 inch ; 12 mm.
One specimen, Texas; Mr. Belfrage. Very distinct by the pe¬ culiar sculpture of the elytra. The grooves extend about one-fourth the width of the elytra, and are wider than the interspaces between them, and very deep ; they are from twelve to fifteen in number ; the posterior declivity of the elytra is margined for almost its entire length, while in P. exesus the margin extends about one half the length of the slope, forming only a semicircle with that of the oppo¬ site side.
I*, obliqinis. — Black, thinly clothed with long erect yellowish hairs; head large, granulate; prothorax densely punctured, convex, feebly chan¬ nelled, slightly narrowed behind, sides straight, rounded near the tip; elytra coarsely punctured, posterior declivity strongly margined for two-thirds the length, and suture elevated behind. Length .45 inch ; 11.5 mm.
One specimen, Texas; Mr. Ilelfrage. Allied to P. exesus, with the punctures of the elytra less coarse, not arranged in rows and with the margin of the posterior declivity much longer, forming about two- thirds of an ellipse; the punctures also become smaller towards the tip.
PHYM4TODES Muls.
1*. nitidiiN. — Black, very shining, sparsely punctured, thinly clothed with long erect hairs; elytra with two transverse ivory-white slightly elevated fascise; base of elytra, legs and antennse more or less brown; joints 1 — 6 of the latter with flying hairs. Length .24 inch; 6 mm.
California. The eyes are deeply etnarginate, though less so than in P. decussatus. This species differs remarkably from all others in our fauna by the highly polished surface jpd sparse punctuation.
IIYBODEKA Lee.
II. <lebilis. — Blackish, finely punctulate and clothed with fine prostrate pubescence with two patches of silvery lustre, one oblique near the base, the other transverse behind the middle; prothorax longer than wide, lateral and dorsal tubercles very feebly developed. Length .25 inch ; 6 mm.
California. Smaller than //. tubereulata Lee. (New Spec., 191), and more slender, having the geueral proportions of Gracilia
AMERICAN COLEOPTERA.
67
mnea ; the thoracic tubercles are not prominent, the antennae of the 9 are as long as the body; of the S a little longer.
Larger series of specimens will probably prove that this is only a badly developed form of the species above mentioned. For the present, however, it is more prudent to retain it as distinct.
XYLOTRECHUS Chevr.
X. planifrons. — Black, finely pubescent; the following parts clothed with bright yellow hair; front except a narrow stripe; slender occipital band, apical and basal margins of prothorax, scutellum, transverse sub-basal spot, transverse band in front of the middle, extending along the suture nearly to the scutellum; transverse band about one-third from the tip, and broad apical margin; beneath with lateral yellow spots on each thoracic segment ; abdo¬ men with broad bands of yellow hair; antennae and legs brown; frontal cari- nae obsolete. Longte 7.5 — 13 mm.
California. Very similar in appearance to X. insignis Lee., but smaller, with the sides of the prothorax moderately and regularly rounded, not constricted behind; the subbasal spot of the elytra is not oblique but placed transversely; the prothorax and anterior part of the elytra as usual is clothjed with long erect hairs. What especi¬ ally distinguishes this specie's is that the usual frontal carinae are ob¬ solete and represented by a scarcely perceptible and very small flat callus. The front is elongated and flat as in other Xylotrechus , or I should be disposed to refer the species to Cfytus ; the maculation of the elytra is not very unlike that observed in C. marginicollis. It also agrees with that species and differs from the Xylotrechi , in hav¬ ing the yellow hair confined to the scutellum and not extending to the elytra.
TOXOTHS Serv.
T. virgatus. — Slender, black, finely densely sericeous pubescent, lateral tubercles of prothorax large obtusely rounded, constrictions strongly marked ; elytra with the pubescence transverse; testaceous, suture, discoidal stripe and side margin blackish, tip obliquely subtruncate; abdomen of tne % ferrugin¬ ous. Length 13 mm.
Oregon, Vancouver and British Columbia. This species might be mistaken for a variety either of vittiger or vestitus, but on comparison with the latter, which it resembles in the hairs of the elytra lying transversely, the constrictions of the prothorax are deeper and the lateral tubercle more prominent; in comparison with the former, the head is less narrowed behind, the lateral tubercle of the prothorax is larger and more obtuse, and the pubescence of the elytra is different, the discoidal vitta is also narrower, confined to tne upper plane of the
68
J. L. LECONTE, M. D.
elytra and the lateral space between it and the margin is ferruginous. The antennae in % are stout and as long as the body ; in the 9 more slender and a little more than half as Ion"; the abdomen is ferru"in- ous in the former, blackish with silvery pubescence in the latter, as in T. vest it us.
STR4NGALIA Scrv.
delicata. — Elongate, black; elytra testaceous, shining, sparsely punc¬ tured, with the scutellar margin, and a short basal vitta blackish ; tips dehi¬ scent, rounded; abdomen and legs ferruginous, tarsi dusky. Length 10 — 12 mm.
California. The prothorax is more sinuate on the sides, and the hind angles less prolonged than in our other species; the form is as slender as in the male of any species and is scarcely less so in the 9 than in the % . The antennae have no sensitive spaces and the last ventral segment of the % is not excavated but merely feebly im¬ pressed and broadly emarginate at tip. The antennae are inserted ou a level with the front margin of the eyes as in all our other species.
LEPTlIlt A Linn.
Ij. rliodopus. — Elongate, black, thinly and finely pubescent, thorax densely not finely punctured, longer than wide, gradually narrowed in front, feebly rounded on the sides, hind angles small acute; elytra parallel, coarsely punctured, tip subtruncate; feet bright ferruginous. Length 6.5 mm.
California. Allied to xubaryentata , rufibasis , etc., but the protho¬ rax is less finely punctured.
O BEREA Muls.
O. <1 ii a dri callosa. — Leaden-black, clothed with fine cinereous pubes¬ cence ; prothorax yellow with four elevated black tubercles, the outer ones being nearer the base, a little wider than long, sparsely but coarsely punc¬ tured, disc elevated at the middle near the base; elytra coarsely punctured, with two elevased lines, basal margin yellow extending a short distance along the suture and side margin, tip rounded ; legs and abdomen yellow, 1st and 2d ventral segments each with a broad blackish band, tips of tarsi black. Length .65 inch ; 1 1 mm.
'J, . — With the last ventral segment broadly concave and emarginate; last dorsal segment paojecting beyond the pygidium, which is not retuse, but trun¬ cate and subemarginate.
9- — With the last ventral channelled and less concave; pygidium retuse and prominent just in front of the tip, closely applied to the last ventral.
Western part of California and Nevada. In one specimen three ventral segments are dark, leaving onlv the -4th and 5th yellow. The claws in this species are broadly appendiculate at base and the elytra are rounded at the tip as in 0. Schaumii , to which it is closely allied. It differs, however, by the prothorax wider, more rounded ou the
AMERICAN COLEOPTERA.
69
sides, with the callosities more prominent and uot marked with a large puncture as in that species; the 1st joint of the antennae is also a little longer.
STEREOPALPUS Fertd.
S. pruinosns. — Dark lead-colored, clothed with fine cinereous pubes¬ cence; prothorax campanulate, very densely and finely punctulate, finely channelled, less convex than usual; elytra more finely punctured than in the other species ; thighs frequently yellow, with the tips black. Length .28— -.38 inch ; 7 — 9.5 min.
California, abundant; Mr. Crotch. Of the same form as the Eastern species, but with the prothorax less convex and the elytra more finely punctcred.
EURT GENUS Ferte.
Eu. campannlatus. — Black, with a gray metallic lustre, clothed with half erect pubescence; prothorax scarcely longer than wide, campanulate, deeply channelled, strongly constricted at tip, sides suddenly rounded before the middle, then narrowed and nearly parallel, base margined, dise less con¬ vex than usual, very densely punctulate, and with scattered large punctures; elytra strongly and lhickly punctured, marked with round spots of cinereous pubescence; 2d joint of antennas a little shorter than the 3d. Length .30 inch; 7.5 mm.
Vancouver ; Messrs. Matthews, four specimens. Differs from E. const rictus by more robust form and the absence of very long scattered erect hairs, and from all other species by the prothorax being broader and more suddenly rounded in front of the middle. The 2d joint of the anteunse is also comparatively longer, being but little shorter than the 3d.
EESTROPHIJS Ill.
E. impressicollis. — Elongate oval, equally rounded at each end, not very convex, brown, thinly clothed with very fine cinereous pubescence; finely and very densely punctulate, prothorax wider than long, sernicircularly rounded in front, feebly bisinuate and finely margined at base, with a basal impression each side, which is marked by a longitudinal line- antennae scarcely reaching the base of the prothorax, joints 6 — 10 gradually but slightly wider. Length 6.5 mm.
Vancouver Island. This species has a perfectly regular elongate elliptical form and is less convex than any other known to me. It is also easily distinguished by the longer basal impressions of the pro¬ thorax and by the last joint of the maxillary palpi being broader, and more obliquely truncate; the spurs of the hind tibiae are compara¬ tively a little smaller and the elytra are not striate.
70
J. L. LECONTE, M. D.
HI-ArVI IM S Latr.
It. Ini i Irons. — Oval, rather elongate, moderately convex, dull black, densely punctured, finely pubescent; front wider before the eyes and distinct¬ ly angulated at the sides; prothorax a little wider than the elytra, twice as wide as long, narrower in front, much rounded on the sides, base sinuate to¬ wards the sides and broadly truncate at the middle; hind angles obtuse, well defined ; disc broadly convex, sides widely depressed. Elytra a little narrow¬ er than prothorax, elongate, sides parallel, tip rounded, striae fine, finely punc¬ tured, not deeply impressed, interspaces nearly flat. L. 9.7 mm.; .38 inch.
One specimen, Vancouver Island; Mr. Crotch. Near B sordid us , but larger, narrower and distinct by the clypeus being angulated at the sides, the prothorax narrowed towards the base, and more strongly rounded on the sides, and by the interspaces of the elytra not alterna¬ tely more convex.
ASCLERA Schmidt.
A. discolor. — Black, finely pubescent; mouth, prothorax and elytra dirty yellow: prothorax very finely punctulate, narrowed and constricted behind, disc with two very large excavations and a smaller one near the base; etytra densely ami finely punctureb, with lhe usual 3 elevated lines, the inner one less distinct; dusky towards the tip; legs dusk}', tip of thighs and base of tibiae yellow. Length .27 inch; 7 mm.
California; Mr. Crotch, eight specimens. This species precisely resembles .4. excuvata and nigra Lee., differing only in color.
R II I X A Kirby.
R. frontalis*. — Black, shining; head sparsely coarsely punctured, beak straight, as long as the prothorax, coarsely and comewhat densely punctured, obsoletely sulcate and sparsely setose each side; frontal fovea distinct; eyes nearly contiguous beneath, but widely separated above; prothorax a little longer than wide, narrowed in front, and broadly rounded at the sides, apex tubularly constricted, disc coarsely but not densely punctured, base nearly straight, margined; elytra cylindrical with rounded humeri, sides parallel, apex rounded, strife finely punctured, interspaces flat, with a few distant small punctures; prothorax with the flanks and under surface densely and coarsely punctured, trunk and abdomen sparsely punctured, front tibire with 5 — 6 small teeth on the inner edge. Length .32 — .45 inch ; 8 — 11 mm.
Mojave Desert, under bark of Yucca; Mr. Crotch. This species differs from the others by the eyes not extending on the upper sur¬ face of the head, so that the front is broad and convex. The appear¬ ance is that of a gigantic Cossonide. The pygidium is almost covered by the elytra, but projects a little as in R. barbirostris.
Further study may require this to be separated as a distinct genus.
CRY PH ALUS Er. (emend.)
C. carinulatusi— Cylindrical, less elongate than usual, black or brown, thinly clothed with long erect hairs; prothorax one-third longer than wide, sides parallel, apex rounded, hiud angles obtuse and rounded, disc rough in
AMERICAN COLEOPTERA.
71
front, as usual with transverse rows of sharp granules, punctured behind, with a nearly smooth space each side ; dorsal line smooth, narrow and slightly ele¬ vated ; behind the roughened part is a broad shallow transverse impression; elytra with approximate rows of rather distant punctures, posterior declivity deeply sulcate next the suture, outer edge of declivity with three small denti¬ cles, between which and the suture are two larger and more prominent acute teeth; front tibiae with 4 — 5 distant acute teeth. Length .08 — .12 inch;
2 — 3 mm.
Lake Tahoe, Calaveras and Mojave region, California ; Mr. Crotch : Vancouver Island; Mr. Matthews. This species is allied to C. niti- dulus , but is larger and less elongate. It is easily distinguished by the dorsal line of the prothorax being feebly elevated, and there¬ fore subcarinate, while in nitidalus and atratulus the line is broader and flat. The teeth of the posterior declivity of the elytra are more developed and placed in the same manner as in certain species of Xyloborus, but the club of the antennae is not at all as in that genus; the transverse sutures are quite distinct and convex forwards, pre¬ cisely as in C. nitidulus. In the black specimens the shank of the antennae and the tarsi are brown.
(- C. puncticollis.— Cylindrical, black or brown; prothorax nearly one- half longer than wide, in front with transverse rows of acute granules, behind sparsely and strongly punctured; elytra with rows of rather close set punc¬ tures, rows not approximate; posterior declivity deeply and broadly sulcate, outer edge of declivity obtuse; denticles very small, scarcely perceptible. Length .05— .06 inch ; 1.2— 1.5 mm.
Calaveras, California; one specimen, Mr. Crotch; Texas; Mr. Bel- frage. Also allied to C. nitidalus , but much smaller, with the elytra! rows of punctures finer and more distant, and the denticles of the pos¬ terior declivity small and inconspicuous.
(/ dllgestus. — Black, shining, thinly clothed with fine erect hair; protho¬
rax one-third longer than wide, rounded in front, rough with acute tubercles and sparsely pubescent, disc behind strongly not densely punctured, with smooth median spaces, and a vague transverse impression behind the rough portion; elytra with somewhat irregular rows of moderate sized punctures, su¬ tural grooves extending from the middle to the tip, posterior declivity convex, nearly smooth, with the suture elevated, and the furrow composed only of the sutural stria. Length .70 inch ; 1.7 mm.
Mojave Desert; Mr. Crotch. Allied to C. puberulus Lee., but with the punctures of the elytra more distinctly arranged in rows ; and the pubescence finer. Rubbed specimens may appear to resem¬ ble atratulus and nitidalus , bnt the elytral punctures are much smaller, the rows more approximate, and the groove of the posterior declivity much narrower.
J. L. LECONTE, M. D.
XYL.EBOKEK Eichhoff.
X. vicinns. — Cylindrical, black or brown, antennre and feet dark ferru¬ ginous; prothorax longer than wide, broadly rounded on the sides, gradually narrowed in front and rounded at tip, punctured behind, granulate and hairy in front; elytra with distinct rows of punctures, interspaces flat with single rows of more distant punctures, sparsely clothed with long erect hair; pos¬ terior declivity concave, edge of concavity with several small denticles and two large ones. Length .10 inch ; 2.5 mm.
British Columbia; Mr. Crotch. Allied to X. caelatus Eichh., but tbe elytral punctures are smaller and more distant, and the inter¬ spaces wider and flat. The denticles of the posterior declivity are similarly arranged and the two largest are rather within than upon the margin of the declivity. The tibiae are coarsely and irregularly serrate as in caelarm.
X. linmatiis. — Black, rather robust, with a few erect hairs ; prothorax scarcely longer than wide, nearly square, with the apex rounded as usual, disc punctured behind, with a narrow smooth dorsal space, punctures before the middle roughly ami acutely granulate; elytra with rows of distant punctures, sutural groove deep, broader behind, and expanded into the very deep pos¬ terior excavation, which is smooth and sharply margined ; near the upper part of the declivity on each side is a long spine bent downwards at the end, and near the tip is a small acute tooth. Length .12 — .16 inch ; 3 — 4 mm.
Mojave Desert, California ; Mr. Crotch. J observe no sexual dif¬ ferences in the individuals before me. This species resembles X. pla- rjicitus Lee., Z in the singular armature of the elytra, but is much larger and otherwise <|uite different.
Several species of Xyleborus are in Mr. Crotch’s collection, but are too closely allied to those already described to be properly mentioned on the present occasion.
TO. II ICES Latr.
T. Iatidens. — Cylindrical, brown, shining, clothed with long erect yellow hairs, prothorax more parallel on the sides than usual, not much longer than wide, more broadly rounded in front, hind angles rounded; disc sculptured as in T. pini, more strongly impressed each side near the middle; elytral strise deep, closely punctured, interspaces each with a row of punctures; posterior declivity concave as usual, subsutural denticle small acute, next tooth broad, composed of the confluence of three cusps, of which the upper one is least de¬ veloped and the middle one most prominent; following this is a long acute tooth, and then the usual apical acute margin. Length .12 inch, 3 mm.
California; Mr. Crotch. Smaller than T. pini, with a shorter pro¬ thorax and very different elytral sculpture and armature.
AMERICAN COLEOPTERA.
73
Desorptions of New Species of COLEOPTERA from the Pacifie Coast of the United States.
BY G. R. CROTCH, M. A. CANTAB.
[The descriptions here published were the last prepared by Mr. Crotch, and were intended to make a companion paper to those by Dr. Horn and myself. Many species which he desired to describe, belonging to families to which he had given special attention, re¬ main undetermined , the rapid progress of the pulmonary phthisis which caused his death, having rendered all scientific labor impossible. I have, by the kind permission of Mr. W. D. Crotch, retained a series of the unnamed forms, which will be investigated fully at a future time. — Lec.]
Omus sequoiarum, n. sp.— Closely allied to 0. calif ornicus , but rather longer and markedly broader and stouter; the labruin is produced in front, instead of being transverse or at most convex; the antenna are clearly thicker and shorter ; the thorax is broader and shorter and less constricted at the base, the sides are more rounded, the disc is much less wrinkled, without being as smooth as in 0. Audouini ; the elytra are also broader and more convex. L. 17.5 mm.
Very distinct by the form of the thorax, which is so broad that the side pieces are not visible from above, as is the case in the other species. Found at present only at Calaveras in the Sierra Nevada, originally by Mr. Edwards, and afterwards by myself, in June, 1873.' I have seen in all 20 specimens precisely similar.
O. Eiwardsii, n. sp.— Again allied to 0. calif ornicus, but longer, and a generally larger insect; the antennae are much stouter (being in fact thicker than in any other species), the labrum is convex in front, head broad, super¬ ciliary ridge obsolete; thorax as broad in front as it is long, sides straight, ob¬ lique, much narrowed towards the base, disc feebly wrinkled as in 0.°sequoia- rum ; elytra with the sides piore parallel and less ventricose. L. 17.5 _ 18 mm.
This is a larger and stronger insect than the' others, with thick an¬ tennas, heavy femora and longer tarsi. All the known specimens (6 in number) come from Lake Tahoe where it was first found by Mr. Henry Edwards, and again by myself. I have great pleasure in dedi¬ cating this species to its original captor, who had already detected the distinctness both of this and the preceding species.
Hydropoms (Ctelambus) unguicularis, n. sp.— Elongate ovate, fulvous, breast and abdomen black; head finely punctulate with smooth spaces; thorax transverse, sides slightly rounded, punctulate, disc nearly smooth, with a small black central mark and a linear fovea, base and apex faintly black ; elytra regularly elongate-ovate, closely and finely punctate throughout, each
TRANS. AMER. ENT. SOC.
(10)
July, 1874.
74
G. R. CROTCH, M. A.
with the suture (very narrowly) and three lines black, almost entire, a fourth line is broadly interrupted in the middle and at the apex. % anterior tarsi short, broad, 3d joint deeply bilobed, external claw thickened, internal re¬ duced to half the ordinary size, so as to appear rudimentary. L. 5.5 mm.
British Columbia, one male. Resembles If. parallelogrammus of Europe.
Hydroponic (Goelambns) masciilinus, n. sp. — Somewhat obovate, pointed behind, pale fulvous, breast and abdomen black; head very finely punetulate; thorax short, transverse, sides straight, base margined with black, finely and rather closely punetulate; elytra thickly and finely punetulate, pale yellowish, with the suture and four narrow lines black (the first and third not quite reaching the base). % anterior claws much elongate, deformed, sub¬ equal, the external one flattened. L. 4.75 mm.
Lake Labache; very distinct by the male characters; the 3d joint of the anterior tarsi is also feebly bilobed and the claw joint is large and hardly longer than broad.
HydnoMiis Msitthewsii, n. sp. — Rather elongate, parallel, convex, testaceous; antennae rather short, stout, 7th joint nearly as long as 9th, club pale head finely punetulate; thorax broader than long, narrowed towards the front which is truncate, front angles rounded, sides rounded towards the base, hind angles evident, obtuse, surface rather thickly punetulate, with a trans¬ verse punctate basal impression terminating in a fovea on either side; scutel- lutn strongly punctate; elytra punctate-striate, sutural stria more deeply im¬ pressed, intervals punetulate and confusedly rugulose ; body beneath smooth, femora deeply punctate. L. 4 — 6) mm.
Flying at dusk near Gold Stream, Vancouver Island. The Messrs. Matthews took three or four fine male specimens of this species, which deepens in color to piceous-bruwn, and the punctuation varies in intensity.
Anisotoma paliidicola, n. sp. — Regularly ovate, dark chestnut-brown, antennae long, club lax, head scarcely punetulate ; thorax convex, posterior angles obtusely rounded, surface shining, clearly a;id rather closely punctate; elytra also rather closely punetulate throughout, and feebly transversely rugu¬ lose, a sutural row of punctures tolerably marked. L. 3J mm.
Sweeping at dusk in the marshes on El Cajon Ranch, near San Diego. Allied to A. mo ruins , but distinct by the more strongly punc¬ tate thorax and the irregularly punctate elytra.
IVostoinis americanus, n. sp. — Elongate, flat, testaceous-red, paral¬ lel ; head and thorax rather obsoletely punctate, the latter longer than broad, with a median line; elytra punctate-striate, intervals smooth. L 5J mm.
Flying at dusk near Gold Stream, Vancouver Island, at the end of July. It is extremely close to the European P. mandibular is, from which it only differs by the longer 3d joint and the more oval terminal
AMERICAN COLEOPTERA.
75
joint of the antennse, the more rounded sides to the thorax and the shape of the jugular processes, which are very much less curved in¬ wards towards each other in the American species.
flirtsconotf us ? linearis, n. sp. — Elongate linear, not very convex, pitchy brown, clothed with a tolerably dense golden pubescence; head broad, scabrous; thorax longer than broad, front angles acute, sides crenulate, straight, narrowed slightly towards the base, disc scabrous, with two shallow fovese towards the base, which is strongly margined ; elytra each with five slightly raised lines, intervals with two rows of rather deep punctures, base and subapical spot rufous; body beneath opaque, punctate. L. 2.7 mm.
Under bark of Sycamore or some small forest tree at the Ilot Springs in the Sta Inez Mountains. The little genus Ozognathu^'Was excessively common in the same bark. This species agrees with Las- conotus in the 3-jointed club, but has the sculpture and appearance of Sgnchgtocha [Ditoma\; it should probably form a separate genus, which may be compared with lllestus Pascoe.
Oxylseimis calif'ornicus, n. sp.— Elongate, cylindrical, dark red, finely pubescent; head punctate; thorax elongate, very coarsely punctate, with a smooth medial line and well marked basal impression near the hind angles; elytra punctate-striate, interstices smooth; prosternal epipleurse rugu- lose, ventral segments coarsely punctate. L. 3.5 mm.
Calaveras, Sierra Nevada.
Tfogosita yuccae, n. sp. — Elongate, dark pitchy brown, legs paler; head finely subrugulose, sparingly punctate, a short impressed frontal medial line, anterior edge deeply tridentate; thorax about as long as broad in front, sides almost straight at first, then rapidly obliquely narrowed towards the base, sides and base strongly margined, hind angles very obtuse, sculpture as on head; scutellum transverse, very small, elytra margined at base, with rows of impressed punctures, intervals flat, also with rows of finer punctures, at the apex a small sutural stria is indicated; beneath brownish, prosternum with a few deeply impressed punctures. % mentum with a fulvous tuft of hairs. L. 19 mm.
Under bark of the tree Yuccas on the Mojave desert in May. Apart from the color it may be noticed that the eyes are more strongly granulated than in T. virescens.
Differs from T. barbata by much more sparse punctuation of head and thorax and very weak punctures on the elytra.
Colastus yuccse, n. sp.— Broad, depressed, opaque, black, pubescent, closely subrugulosely punctate throughout; thorax broader than long, feebly emarginate in front, front angles rounded, sides and base margined, the former broadly rounded, as are also the hind angles, base feebly sinuate in front of the scutellum ; elytra with the sides acutely margined ; pygidium sculptured as the rest of the upper surface. L. 5 mm.
I
a. R. CROTCIT, M. A.
Abundant in the unopened flower heads of Yucca in the Mojave desert.
ColiiKtiis sign voiisis, n. sp. — Subdepressed, shining, with a faint golden pubescence, color varying from brown to fulvous, head punctulate. with a transverse line between the antennae; thorax transverse, not emarginate in front, angles deflexed, rounded, sides and base margined, the former rounded as are also the hind angles, disc dark brown clearly punctulate; scutelluru large, punctate; elytra hardly margined, dark fulvous, rather closely and even subrugulosely punctulate; pygidium closely punctulate; prosternum smooth, ventral segments thickly punctate. % with an additional dorsal seg¬ ment. L. 4 mm.
Found at Fort Tejon in the flowers of the Agave.
EPURAEA Er.
E. Ilornii, n. sp. — Broadly ovate, subdepressed, entirely fulvous, hardly shining, pubescence yellow ; antennae with the cl ib yellow, last joint narrower than 10th; thorax broader than long, narrowed.in front, greatest breadth be¬ hind the middle, sides rounded, posterior angles slightly produced, acute, sides explanate, margin reflexed, not thickly punctulate; scutellum punctate; elytra broader than thorax, sides rounded, explanate, punctuation subrugulose, apex obliquely punctate. 'J, intermediate tibiae simple. L. 4 — 4.5 mm.
Canada; (Horn.) This is the largest and broadest Epuraea known to me.
E. (Dadopora) Icvana. n. sp. — Suboblong, not convex, entirely of a rich fulvous and clothed with golden hairs; antennae with the 11th joint smaller than the 10th; thorax slightly transverse, very little emarginate in front, sides only slightly rounded, margins reflexed, but not explanate, hind angles right angles, sparsely punctate; elytra rather sparsely punctate, trun¬ cate behind, angles rounded ; beneath finely punctate. 9 intermediate tibiae simple, posterior dilated, constricted at the base. L. 2.5 mm.
Texas; (Leconte.) This belongs to the same section as the E. 10- guttata , of Europe. E. helvola Er., is very distinct by the distant posterior coxae and should form a new subgenus, which may be called Epurseanella.
E. ? mimogama, n. sp. — Deep brown, margin and legs rufous, somewhat shining, parallel, subeouvex; upper surface closely and visibly punctate, punctures subrugulose in some lights, or possibly very faintly pubescent; thorax deeply emarginate in front, sides broadly margined, hind angles largely explanate, prominent, subacute, base not margined, sinuate behind the angles ; scutellum triangular, punctate; elytra with the sides broadly flattened, apex subtruncate; beneath closely punctate, thoracic epipleurse rugose. with an additional dorsal segment. L. 5 mm.
Found in Vancouver and throughout the Sierra Nevada in the small white globular fungus which occurs on dead pines. This will be found to have a hole underneath, and if carefully detached a pair
AMERICAN COLEOPTERA.
of the above insects will gennerally be found, unless a marauding Tro- gosita has taken possession.
PTOMAPIIAGITS Ill.
P. leptinofdes, n. sp. — Broad, depressed, shining, rather pointed behind, bright fulvous sparsely pubescent ; head and thorax sparingly punctate, shi¬ ning; elytra subrugulosely punctate, epipleurse scabrous; ventral segments finely punctate; antennae with the joints elongate, 2 = 3, 8 smallest of all and narrower than 7 or 9. £, anterior tarsi with three joints dilated. L. 3 mm.
Fort Crook ; (Horn).
This remarkable species has a strong external resemblance to Lep- tinus , the head being small so that the thorax is largely rounded on the sides, the posterior angles are produced but rounded.
GRYNOCIIARIS Thoms.
G. pilosula, n. sp. — Brown, oblong, subcon vex, thickly clothed with a sericeous pale decumbent pubescence, mixed with sparse erect hairs arranged in rows; thorax transverse, sides rounded, crenulate, broadly explanate, front angles rounded, shining, sparsely punctulate; elytra shining, rather less strongly pubescent, deeply and pretty closely punctate, sides explanate in the basal third; beneath pubescent, body dark. L. 4.5 — 5 mm.
Oregon and Vancouver. Entirely unlike G. oblonga by the pubes¬ cent, punctate surface, but agreeing generically with it.
SCYJOFS Kug.
S. pacificiis, n. sp. — Oval, shining, sparsely pubescent, punctate; thorax transverse, margined at base; elytra each with a large yellow discoidal spot before the middle; body beneath punctate, tibiae and tarsi red. ^ front an¬ gles of thorax testaceous. L. 2 mm.'
Calaveras, also in North California, at Lake Port, on oak trees. The metacoxal lines are complete and reach the edge of the first ven¬ tral segment.
S. conifer am in, n. sp.— Oval, pubescent, black beneath; thorax black, front angles red, lightly punctulate, base margined; elytra fulvous-red, base and a subscutellar triangular patch black, visibly punctate. L. 1.5 nun.
Calaveras, Taho, San Barnardino, on pine trees. The metacoxal lines