NORTH AMERICAN COLEOPTERA. 9 confusedly roughened near the basal angles ; median line nearly obsolete. Elytra at base as wide as the prothorax, two-thirds as long again as wide, evenly rounded behind, leaving the pygidium exposed ; sides parallel and feebly arcuate ; surface evenly and strongly striate, interspaces moderately convex. Scutellum extremely small, angulated behind. Pygidium finely punctate. Legs moderate, black, tarsi very dark blackish-fuscous, first joint of anterior nearly equal in length to the second and third together, slightly shorter than the last ; posterior tarsi long and slender, first joint distinctly longer than the second and third together, fourth joint very small. Length 11.0mm.
Eastern Pennsylvania; one specimen, %.
I have only succeeded in finding one representative of this species, which seems to be very distinct by reason of the structure of tlie hind tarsi ; the mandibles are very large and robust, and are very blunt at the tips, as if worn by long usage. It greatly resembles at first sight several species of Anisodactylus.
The parasite of this species is very small, as long as the diameter of the first tarsal joint ; it is narrowly oval, moderately convex, highly polished, and cinereo-testaceous in color ; upon each side there is a distinct impressed puncture, and there appears to be a transverse segmentation in the anal region.
H. manliattailis n. sp. — Form rather slender, very convex. Entire body and legs, with the exception of the tarsi, deep black, the latter dark reddish-testaceous. Head large, convex, and highly polished ; eyes small and rather distant from the posterior angles ; labrnm very feebly and narrowlysinuate anteriorly, nearly one-half wider than long; epistoma bearing one large setigerous puncture at each anterior angle, posterior transverse suture very feeble ; antennae as long as the width of prothorax, first joint reddish-testaceous, remaining joints much darker, fuscous, pubescence short, very coarse, close, fulvous in color. Prothorax one-third wider than the head, convex, base and apex equal in width ; median line distinct throughout the length of the pronotum ; anterior angles acutely rounded, posterior broadly and evenly rounded ; punctures at the base rather feeble and confused.Scutellum small, triangular. Elytra almost imperceptibly wider than the prothorax, one-half as long again as the head and prothorax together; disk convex, finely, evenly, and distinctly granulate ; striae very fine, interspaces flat ; sides parallel and very feebly arcuate. Abdominal segments very unequal in length, the last longer than the two preceding together. Posterior trochanters scarcely more than one-third as long as the femur ; first joint of anterior tarsi nearly as long as the next two together, that of the posterior much longer than the second and third together. Length 10.5 mm. Staten Island, near the city of New York ; one specimen, % . This species somewhat resembles fimestns, but it is very much less robust than that species, and differs in several other characters. The
10 XnOS. L. CASEY.
mentum is not toothed, and the emargination is evenly rounded at the bottom ; the hist joint of tlie maxilhiry palpi is very slightly shorter than the penultimate, and is much paler in its distal than in its basal half.
As in opacus, the first joint of the posterior tarsi is much longer than the second and third together, and thus another barrier to the union of Harpalus and Selenophorus, as separated in the table given in the Classitication of the Coleoptera of North America, is removed; in the present species this joint is almost equal to the next three together.
H. vespertinus n. sp. — Form moderately robust, sides feebly arcuate. Body intense black, highly polished. Head moderate, width across the eyes slightly exceeding length including mandibles ; supra-orbital setae very long, testaceous ; antennae about equal in length to width of prothorax, rather pale testaceous throughout, last joint strongly compressed ; oral organs testaceous,tips of mandibles darker. Prothorax much wider than the head, onehalf as wide again as long ; sides arcuate anteriorly, parallel and straight posteriorly ; posterior margin transverse ; basal angles very slightly rounded ; surface impunctate, feebly and longitudinally impressed on each side at the base : median line very narrow but distinct. Elytra at base as wide as the prothorax, two and one-half times as long as the pronotum, evenly rounded behind, and leaving the tip of the last ventral segment exposed ; sides parallel and very feebly arcuate ; striae close and strong, intervals convex. Scutellum small, acute posteriorly. Legs moderate, femora and tibiae piceous-black above, femora r«fo-testaceous beneath, tarsi rather pale testaceous, first four joints of anterior tarsi equal in length in the male, last joint as long as the first and second together. Length 8.5-9.0 mm.
Arizona (Morrison). Apparently quite abundant in the extreme southwest.
In the coloration of the legs it resembles H. rvjimanus Lee, from Lake Superior.
H. placidlis n. sp. — Form moderately slender. Color dark castaneous above, slightly paler beneath, legs and antennae throughout still paler. Head rather large, longer than broad ; eyes moderate, situated at one-third the entire length from the posterior angles ; surface very convex, highly polished, and excessively minutely punctulate ; labrum and epistoma nearly as in mnnhuttunis, transverse suture very distinct ; antennae very slightly longer than tlie width of prothorax ; emargination of mentum trapezoidal, bottom broadly and rather feebly arcuate. Prothorax much wider than the head, base very sliglitly longer than the apex ; anterior angles rather acutely rounded, posterior broadly and evenly rounded ; surface moderately convex, basal punctuation broadly diffused, rather feeble and somewhat confused. Elytra very slightly wider than the prothorax, two-thirds as long again as the head and prothorax together ; disk rather depressed, minutely and distinctlygranulate ; striae moderately strong, intervals nearly flat. Posterior
NORTH AMERICAN COLEOPTERA. 11 trochanter nearly one-half as long as the femnr ; femora robust ; first joint of posterior tarsi not equal in length to the next two together ; inner terminal spur of anterior tibiae very long, robust at base ; outer apical spurs, three in number, very stout ; on the under surface and in the middle of the distal edges of the first two joints of the anterior tarsi, there is a short, acute tooth, projecting at right angles to the axis of the joint. Length 9.5 mm. "Willets Point, Long Island ; one specimen, % .
This species resembles fallax, and differs from that species superficially in its proportionally longer elytra and shorter prothorax ; also in the posterior angles of the latter, which are more broadly rounded. H. niutaliilis Hald.
This appears to be a valid species, the differences between it and herhivagus Say, lying principally in its smaller size, more narrow and convex form, and in the structure of the prosternal intercoxal process ; the prothorax is also relatively much longer and narrower than in that species. Before determining the species in. my cabinet from Dr. LeConte's collection, I had already separated the two species, which can very readily be done by the unaided eye, indicating a distinct difference of facies ; mutahilis is much the smaller of the two. The five folloAving species are the result of a study on a number of specimens, all of which were included in my cabinet under the name viridiceneus Beauv., and was as much a source of surprise to me as it may perhaps prove to others. They are separated by the setigerous punctures of the epistoma, and in this respect are more distinctly characterized than many more marked species of this difficult genus. I had long been inclined to think that a much smaller and narrower form was a distinct species from vii-idiaineus, but was not prepared to find such a variety in the others, which greatly resemble each other. They are all metallic-green species, and may be clearly separated as follows : — Epistoma bearing two closely approximate and unequal setigerous punctures at eaeli anterior angle ; also two, more widely separated, in the middle, nearly on a line with the pairs at the angles vil'idiaeiieus. Epistoma bearing two closely approximate and nearly equal setigerous punctures at each anterior angle, and in addition, two rather more distant punctures in the middle and near the posterior margin COllTictor. Epistoma bearing two closely approximate setigerous punctures at each anterior angle Caiioilicus.
Epistoma having but one setigerous puncture at each anterior angle. Larger species. Head large ; elytra wider than prothorax llistralis. Smaller species. Head smaller ; elytra as wide as prothorax. aenesceus.
12 THOS. L. CASEY.
n. viridiacneus Beauv. — Head large. Prothorax one-half as wide again as long, very slightly longer than the head, and very feebly narrowed behind ; hind angles nearly acute, anterior angles rather broadly rounded ; punctures at base very coarse and closely crowded, coalescent ; surface highly polished, not granulate. Elytra equal in width to prothorax ; sides parallel and very feebly arcuate ; surface strongly and very minutely granulated. Length of head and prothorax together 4.5 mm., of elytra 6.3 mm. ; width of elytra 4.0 mm. Female.
This is a common form, and is widely distributed in the United States, it is mentioned liere simply for comparison.
The European ceneus seems to be distinct from all our allied species. H. COiivictor n. sp. — Head small, much broader than long. Prothorax much longer than the head, one-third as wide again as long ; sides much more arcuate anteriorly than posteriorly ; punctuation at the base deeper, more widely diflused and less coalescent than in any of the other species. Elytra as wide as prothorax ; sides parallel and nearly straight ; granulation nearly obsolete ; striae deep, interspaces Hat. Length of head and prothorax together 4.6 mm., of elytra 5.S mm. ; width of elytra 3.9 mm. ; male. Willets Point, Long Island.
H. canon icus n. sp. — Form as in viricUieneux. Head small. Prothorax just percei)tibly narrowed behind, not one-half as wide again as long; sides strongly and nearly evenly arcuate ; punctures as in virHliceneus ; hind angles less strongly, anterior angles more strongly arcuate than in that species. Elytra very slightly wider than the prothorax ; sides parallel and rather feebly arcuate ; granulation very feeble. Length of head and prothorax together 4.2 mm., of elytra 5.0 mm., width of elytra 3.8 mm, Male. Rhode Island.
II. llistralis n. sp. — Head large. Prothorax nearly as in viridiij;neus. Elytra distinctly wider than the prothorax ; sides parallel and strongly arcuate ; disk strongly and minutely granulated ; striae more feeble, interspacesmuch flatter than in either viridi(enens or canonicus. Length of head and prothorax 4.5 mm., of elytra 6.2 mm. ; width of elytra 4.3 mm. Female. New York State.
The elytra have in the type specimen a strong reddish reflection, II. aenescens n. sp. — Form j-iroportionally much narrower and more slendiT than in any of the four species which precede. Head rather large, as wide across the eyes as long. Prothorax but slightly wider than the head, feebly narrowed behind ; sides much more arcuate anteriorly than posteriorly; more finely and sparsely punctured at base than in the other species of this group, and also covering a more limited area ; much longer than the head, and one-third as wide again as long. Elytra as wide as the prothorax ; sides parallel and nearly straight ; striae moderate, interspaces feebly convex ; granulation excessively minute and regular. Length of head and prothoraxtogether 4.0 mm., of elvtra 6,0 mm,; wiilth of elvtra 3.4 mm, Male.
NORTH AMERICAN COLEOPTERA. 13 Rhode Island ; Willets Point, Long Island.
This species has the same arrangement of setae upon the epistoma as lustralis, but they are more widely separated in other characters than any other two members of this rather singular group. In the series of four specimens which I have before me, the males and females are equally divided. There is no perceptible variation among them dependent upon sex, except in the usual strong dilatation of the tarsal joints in the male.
SEI.E1V0PHORUS.
S. aeneopiceilS n. sp. — Form nearly as in pedicularius Dej. Color above piceo-aeneous, beneath slightly paler, piceous, paler toward the head, legs and antennae very pale plceo-testaceous, the latter nearly uniform throughout. Head nearly as broad as long, convex ; eyes small ; supra-orbital seta long, slender, and situated opposite a point of the eye about one-fourth the length of the latter from its posterior extremity ; labrum paler in color ; sides convergent anteriorly ; antennae shorter than the head and prothorax together, second joint nearly three-fo-urths as long as the third, joints seven to ten equal in length, and two-thirds as long as the last ; emargination of mentum very deep, evenly rounded at the bottom, parabolic ; on the edges of the emargination, near the bottom and somewhat distantly separated, there are two short stout setae ; on the sub-mentum there are four setae, two at each extremity, all approximately on the same transverse line. Prothorax widest slightly in advance of the middle, where it is nearly one-half wider than long ; sides rather strongly arcuate, most strongly so anteriorly; apical angles broadly rounded, basal rounded but less broadly so ; anterior and posterior margins nearly transverse and straight ; disk much more transversely convex anteriorly than posteriorly, polished, minutely reticulated, narrowly margined throughout its circumference, impunctate at the base; median line very fine and becoming obsolete near the bases; basal impressions feeble and irregular. Elytra at base as wide as the contiguous pronotum; sides divergent and arcuate near the humeri, thence parallel and very feebly arcuate for three-fifths the entire length ; together acutely rounded behind ; disk strongly declivous at the sides, about three times as long as the pronotum, slightly less than twice as long as wide ; striae finely impressed, intervals very feebly convex, polished, minutely reticulated ; punctures of second, fifth, and seventh striae distinct, impressed, rather small. First joint of posterior tarsi fully as long as the next three together. Length 6.1-6. (j mm.
Arizona (Morrison).
The erect setiform pubescence around the exterior edges of the elytral disk is sparse and very limited in extent ; not as dense as in pedicidartus.
The three species gagatinvs, pedicula7-ri(s, and ceneopicens, which resemble each other more or less, may be separated by the posterior tarsi as follows : —
14 Tiios. L. caset:.
In ceneopiceus the second joint is much longer than the third; third and fourth equal ; fourth and fifth together much longer than the second and third together ; fifth scarcely more than two-thirds as long as the first.
In pedicidarius the second, third, and fourth joints decrease in length with great uniformity; the fourth and fifth together are very much longer than the second and third.
In ffaf/atiuus tlie first joint is not as long as the next three together; the second, third, and fourth joints decrease very uniformly and rapidly in length ; the second and third together are slightly longer tlian the fourth and fifth together ; the fifth is equal in length to the second, and is but slightly more than one-half as long as the first ; the entire tarsus is much more slender.
These differences are very striking, and are so great that it is difficult to conceive of their not having been employed in the classificationofthespeciesinthisgenus.
It may be well to remark, while considering this genus, that (-S".) ellipticus Dej. is quite distinct from the {S.) granarius of that author.
STE^OLOPHUS.
S. gracilis u. sp. — Form as in ochropezus. Body pale piceous-brown above, somewhat paler beneath. Head across the eyes just perceptibly narrower than the length including mandibles ; the latter very prominent ; antennae slender, nearly as long as the elytra, first two joints piceo-testaceous, remainder dark piceous-brown. Prothorax small, slightly wider than head and rather broader than long, very feebly atid evenly emargiuate anteriorly ; sides strongly arcuate, rather more strongly so anteriorly ; posterior angles rounded ; lateral border distinct ; surface highly polished, confusedly punctate near the basal angles ; median line nearly obsolete. Elytra at base one-third as wide again as prothorax, twice as long as broad at base, evenly rounded behind ; sides parallel and distinctly arcuate ; surfacemoderately convex, striae deep and well marked, close, interspaces very convex and highly polished. Legs moderate, pale flavo-testaceous. Length <i.O mm.
Arizona ; one specimen.
This species resembles ochropezus in its general form, but differs in many other characters, among which may be cited the color of the under surface, which in ochropezus is very dark, in some specimens nearly bhick, while in the present species this color is paler than the upper surface, which is in turn very much paler than that of ochropezus : the spine of the front tibia projects from the middle point of that member, while in the latter it is situated mucl) nearer the
NORTH AMERICAN COLEOPTERA. 15 apex ; the last joint of the anterior tarsi in the Eastern species is much longer than in the Western representative. From the depth of color seen in the antennae, the supposition that the specimen from which the description is taken is immature seems untenable. BEItlBIDIlJM.
B. TinilllllllU n. sp. — Form rather slender, stib-depressed. Head moderate, as wide as long ; eyes large, prominent ; supra-orbital elevations distinct and well-developed ; anterior supra-orbital seta opposite a point of the eye two-fifths the length of the latter from the anterior extremity, posterior seta much smaller, and situated opposite a point one-fourth the length from the posterior limit ; interocular surface feebly convex, highly polished, brilliant metallic golden-aeneous in color ; labrum more than twice as wide as long, apical angles acute, front nearly transversely truncate ; third joint of antennae as long as the first ; emargination of mentum very broad and shallow, tooth very stout, acute, and slightly longer than the depth of the emargination ; dental setae strong, situated on the base of the tooth ; there are two setae transversely arranged near each basal angle of the submentum, also a smaller seta at each anterior angle. Prothorax widest at slightly more than one-third its length from the apex, where it is slightly wider than long; sides strongly and evenly arcuate anteriorly, very feebly sinuate just before the basal angles ; the latter acute, anterior angles broadly rounded ; base and apex nearly transverse, the former just perceptibly shorter than the latter ; disk rather strongly and very evenly convex, extremely highly polished, brilliant golden-aeneous, without trace of irregularity or minute reticulation ; longitudinal carinae at the basal angles short and very strong ; just within each there is a deep, rounded impression ; median line narrow and distinct ; sides narrowly reflexed. Elytra across the humeri nearly twice as wide as the pronotum at base ; sides parallel and nearly straight for threefourths the length ; disk more than three times as long as the prothorax, acutely rounded behind, rather depressed, slightly less than twice as long as wide ; very strongly punctate, punctures round, very deeply impressed, arranged in striae-like rows ; distance between the punctures in the rows much less than the distance between the latter ; surface variously mottled with yellowish-testaceous and dark blackish-castaneous, with a preponderence of the former, very highly polished, with greenish metallic! reflections from the punctures. Under surface polished, piceous-black ; legs pale yellowish-testaceous.
Length 4.6 mm.
Arizona.
The reflected light from the pronotum is tinged with metallic-green toward the edges of the disk, while the full reflected light is of a very brilliant aeneous tint.
TACHYS.
T. litoralis n. sp. — Form elongated, narrow, sides parallel. Head and prothorax reddish-testaceous ; elytra darker, fusco;is, tips paler ; legs, oral
16 THOS. L. CASEY.
organs, and bases of the antennae pale flavo-testaceous, remainder of antennae piceous-brown ; under surface of the body slightly darker than the legs, but paler than the upper surface. Head slightly longer tlian broad, upper surface distinctly but minutely granulate ; labrum one-half as wide again as long, very feebly eniarginate anteriorly, and bearing six setae, the two lateral ones very long ; eyes moderate, coarsely granulate, one-third their length in advance of the posterior angles ; antennae scarcely one-half as long as the body, first joint slightly shorter and tliicker than the second, equal in length to the third, joints four to ten shorter than the third, sub-equal and cylindrical, last joint very slightly thicker and two-thirds longer than the tenth, sub-cylindrical and obtusely acuminate at tip ; mentum tooth distinct, simple, projecting below the general surface ; immediately behind the tooth are two very large, deep, closely approximate, foraraenous punctures ; fourth joint of maxillary palpi extremely short and narrow, almost invisible. Prothorax slightly broader and equal in length to the head, one-half as wide again as long ; anterior margin nearly transverse, posterior transverse and feebly sinuate toward the angles ; sides arcuate, slightly more strongly so anteriorly, very feebly sinuate just before the posterior angles, which are strongly and acutely toothed ; anterior angles very slightly rounded ; surface rather feebly convex and very narrowly bordered. Elytra at base slightly wider than the prothorax ; humeral angles rather pronounced ; sides parallel and feebly arcuate ; suture three times as long as the prothorax ; border narrow, continuing from the apices as a sutural stria, other striae almost obsolete: near the inner basal angle of each elytron there is a small circular wart-like elevation, which is apparently setigerous ; there are on the disk of each two setae, and just behind the humeral angles three rather closely approximate, also two to three near the border and two-thirds the length posteriorly. Scutellum small, acute behind, sides arcuate. First four joints of anterior tarsi decreasing uniformly and very gradually in length and width, very short, last joint somewhat longer than the first and second together, narrow at base. Last ventral segment covered very sparsely with very fine, short, recumbent puV)escence toward tip, where there are four equi-distant erect setae arranged transversely. Length 2.3, breadth 0.9 mm. Atlantic City, New Jersey; one specimen.
This seems to be ji very distinct species, being very much more slender and parallel than any other which I have seen. Resembles scitnlits in the Ibrameniform apertures behind the mentum tooth ; they are, however, smaller and closer than in that species.
TITHAMS n. gen.
Mentum coriaceous, short and very wide, broadly, roundly and very evenly emarginate in front, continued anteriorly by the hypoglottis, which appears to form a part of the true mentum ; hypoglottis and mentum together trapezoidal ; sides straight and rapidly convergent, narrowly and transversely truncate anteriorly. Maxillary palpi very well developed, five-jointed, very sparsely and coarsely setose, last joint very small, subulate. Labial palpi