COLEOPTERA. 77 of a circle in outline, and somewhat robust; antennae flavate througliout, slender, distinctly shorter than the hend and prothorax together, second joint three-fifths as long as the third, third slightly longer than the fourth. Prothorax widest slightly in advance of the middle, where it is about threefourths wider than the head, and about one-third wider than long; sides evenly and rather strongly arcuate, more abruptly convergent anteriorly than posteriorly ; apex and base about equal in length, the former broadly and strongly sinuate, the latter transverse ; apical angles rather acutely rounded ; basal angles rather broadly rounded ; disk very feebly convex, highly polished, scarcely visibly impressed toward the basal angles ; border strongly and narrowly reflexed, bearing on each side at two-fifths the length from the apex a long erect seta ; median groove very fine ; surface almost impunctate in the middle, finely, feebly, and rather closely punctulate anteriorly and toward the sides, the latter gradually merging into a very large area along the base and basal angles, which is strongly, very densely, and irregularly punctate. Scutellum triangular, slightly wider than long. Elytra at base distinctly narrower than the pronotum ; sides parallel and very feebly arcuate for three-fourths the lengtli, thence strongly convergent behind ; disk rather acutely rounded at the immediate apex ; inner apical angles acutely i-ounded ; nearly twice as long as the head and prothorax together, and about twice as long as wide, broadly convex, more strongly so jjosteriorly, extremely highly polished, and very feebly opalescent ; striae very fine and ratlier feebly impressed ; intervals nearly flat, excessively minutely punctulate ; in tlie eighth and ninth intervals the punctures become very close, much deeper, setigerous, and abruptly rather conspicuous ; the ninth interval liears a row of about five very large setigerous punctures near the humeri, and another series of about ten very irregular ones near the apices ; the jiunctures of the discal series near the second, fifth, and seventh striae, about ten in number, are very feeble and minute. The edges of the elytra are rather strongly reflexed, and the first elytral stria is continuous with the basal groove, whitdi is very strong, and not attained by any of the other striae ; the punctures in the basal portions of the elytra are close, fine, and distinct ; the scutellar stria is very short, and proceeds from the setigerous verrucation at the origin of the second stria. Legs long and slender, flavate, opaque. Abdomen convex, last segment rather long, bisetose, paler in color. Length 8.0-9.5 mm.
Texas, G.
The Jibove description is taken from tiie female ; in the male, the first joint of tiie anterior and middle larsi is equal in lengtii to the second ; the first four joints strongly and ecjually dilated in both pairs, and clothed very densely beneath with two series of squaniules ; the posterior tarsi in the same sex are long and slender, first joint nearly equal in length to the next tliree together, joints two to four uniformly and rapidly decreasing in length, second shorter than the next two together, and very slightly longer than the last, which is very slender and slightly arcuate ; claws strong. The above specimens I dis- Cont. Part II. 2 December, 1S84.
/8 NORTH AMERICAN COLEOPTERA.
covered mixerl with a series of S. opallnvs in my cabinet. It differs from (liat species in its mudi less transverse protliorax, whicli is very densely and closely punctate at base, in its relatively -more slender form, particularly of tbe head, and in its scarcely perceptibly opalescent elytra. In the male tiie distance between the apical angles of the pronotum is slightly less than the length of base.
STEIVOLOPHIIS Dej.
S. scif IlllIS n. sp. — Form slightly robust, about two and one-half timfs as long as wide, somewhat depressed. Color above black throughout, beneathpiceous-black, scarcely paler ; legs pale testaceous ; antennae brown, testaceous at base; oral organs dark rufo-testaceous, strongly translucent. Head moderate, as wide as long ; eyes large, prominent ; interocular surface four times as wide as the eye, polished, inipunctate, nearly tlat, having on each side, at a short distance from the anterior limit of the eye, a short curvate, oblique, and distinctly marked canaliculation ; epistomal setae far from the anterior angles : labrum very short, over four times as wide as long, angles rounded, very broailly and feebly sinuate anteriorly ; mandibles very short, robust, abruptly and finely acuminate at tip, feebly arcuate ; paraglossae excessively thi-n and transparent ; third joint of the maxillary palpi very short, scarcely more than one-half as long as the last, which is robust and gradually and finely acuminate ; third joint of labial palpi one-third longer tlian the second, rather robust, obliquely and finely acuminate ; gular support of the meutum bearing a long seta at each side near the centre ; ligula obtusely and broadly arcuate anteriorly, having four discal setae ; antennae distinctly longer than the head and protliorax together, very slender, second joint two-thirds as long as the third, third and fourth equal in length, the former slightly more slender. Prothorax nearly one-half wider than tlie head ; base and apex equal in length, the former very feebly sinuate in the middle, the latter broadly and strongly sinuate; anterior angles rather acutely rounded ; basal angles obsolete, very broadly rounded, continuous in curvature with the sides and base; disk slightly wider than long, feebly convex; sides moderately and nearly evenly arcuate; margin narrowly reflexed, disai)pearing toward the middle of the base ; medial groove distinctly marked, narrow, extending from base to apex ; surface impunctate, polished, very finely, feebly, and sparsely punctulate in a limited area on each side of the nnddle at the base where the disk is also very broadly and feebly impressed ; at each side at one-third the length from the apical an<;les there is a long erect seta. Scutellum small, wider than long. Elytra at base very slightly wider than the pronotum ; sides parallel, evenly and moderately arcuate for four-fifths the length posteriorly, abruptly, evenly, and very obtusely rounded behind ; inner apical angles rounded ; disk slightly more than one-half longer than the head and prothorax lo'u'ther, broadly convex, minutely and feebly granulose, polished; striae very fine; intervals nearly flat ; scutellar stria between the first and second elvtral striae rather long; at «me-fourth the length from the apices there is a ndnute setigerous puncture on each elytron just beyond the second stria.
COLEOPTKUA. 79 Legs rather long and slender ; fourth joints of the anterior and middle tarsi strongly hilobed ; first joint of the posterior tarsi scarcely as long as the next two together. Abdomen strongly convex ; terminal segment very broadly rounded at tij>, where there are four equal widely distant setae. Length 3.8-4.2 mm.
Pennsylvania, near Philadclpliia, 2.
Somewhat ix'sembles conjnnctus Say, but is more elongated, and the pronotum is very much less transverse ; it is also black, while in the species referred to the prothorax is invariably rufo-piceous or rufous; it also re^^embles rotandatus Lee, but the pronotum and elytra are not margined witli brown, the former is distinctly wider tlian long, and its basal impressions are not punctiform. BRADYCELLUS Erichs.
In Dr. LeConte's table of this genus (Proc. Acad. Nat. Sci. 1868, p. 381), this author states that B. paraUelus appears to him to be a race of i-npestris. I have before me a specimen which is more elongate tlian rupestris, and in which the pronotum is relatively more transverse ; the color is nearly uniformly piceous. If this be the paraUelus above alluded to — and I have scarcely any doubt of it — there can be no question of the validity of the latter. Besides the differences noted, the emargination of the mentum is strikingly different in the two species, being very broad and shallow in rupestris, and much deeper in paraUelus. In both these species the second joint of the labial palpi is distinctly shorter than the third. GLYCERINS n. gen.
This genus is founded upon a peculiar species hitherto associated with Acu|)alpus, Bradycellus, and Tacl)ycellus in succession. It differs from them in the following characters, and stands, perhaps, properly between the last two.
Prothorax having along the sides of the disk near the edge a row of many erect stiff bristles, becoming more distant toward the posterior angles. Scutellum very short and broad, scarcely entering the elytral disk behind the basal carina. Disk of elytra perfectly smooth, with scarcely any trace of striae except a single well-marked sutural stria. Third joint of the antennae scarcely pubescent, but having numerous stiff setae ; epistoma having two prominent setigerous punctures at each anterior angle. The remaining characters are nearly those of the above-mentioned genera, but the many setae of the pronotum appears to be a character of generic importance. Our single species is — G. nitidus (Dej.).— Spec. IV. p. 474.
HO NORTH AMERICAN C'alil'oriiia and Arizona.
The jrenera in tlii,< portion of the Harpalini may be distinguished as follows: — Mentum tooth very long and slender, as long as or longer than the lateral lohes of the mentum Amerinus.
Mentum tooth short, much shorter than the lateral lohes of the mentum. Antennae with two glabrous joints Bradycellus.
Antennae with three glabrous joints.
Pronotum having but one lateral seta '. ...Tachycellus. Pronotum having many lateral setae Glycerius.
Mentum not toothed Acupalpus.
As additional cliaracters we may mention tlic facts observed by Dr. Horn, that the under surface of the middle tarsi in the male is provided witli squamnles in Amerinus and devoid of squamules in liradycelhis, and tliat in Bradycellus there is usually but one pubescent spot in the middle of the second ventral sejiment, there being two in Glycerius and none in Tachycellus. Dr. LeConte has, in addition, made known the fact in regard to Glycerius iiitidus, that " traces of a long .scutellar stria are apparent in some specimens of this species, which thus differs from all the otliers [Bradycellus] in which tlie midille tarsi of the male are not fnrnislied witli papillae." (Proc. Ac. Phil. 18(j8, j). o.Sl). I have not attempted to coniirm any of tliese stateinenls, ami they are sim[>ly given as published by the above-mentioned authors.
BIDESSrS Sharp.
B. ni^rimis n. sp. — Form rather elongated, depressed. Pubescence excessively sparse, fine, and very short, very inconspicuous; integuments polished ; color above black, head, lateral portions of the pronotum piceotestaceous, also very slightly paler at the borders of the elytra toward the humeri ; under surface black, prosternum and head paler ; antennae intense black, glabrous, slightly i)aler piceo-testaceous toward base. Head scarcely twice as wide as long, strongly arcuate anteriorly ; surface very feebly convex, very minutely, sparsely, and irregularly punctate, more strongly so posteriorly ; eyes large, not at all prominent ; antennae as long as the head and pronotum together, second joint much longer than the first, both slightly more robust than the third, remaining joints slightly flattened, third nearly two-thirds longer than wide, two-thirds longer than the fourth, and very slightly longer than the fifth, fourth very slightly wider than long, eleventh as long as the two i)receding together and narrower, very thin, finely acuminate, cylindrical. Prothorax vjder tiian the head, about two and one-third times wider than its medial length ; sides scarcely visibly convergent from the basal to the apical angles, and slightly arcuate throughout ; apex broadly and strongly emarginate throngiiout for the basal ])<)rtions of the head,
COLKOPTKRA. 81 emargination nearly transverse at the bottom, sides abruptly nearly paralU;! ; apical angles acutely rounded ; base very slightly longer than tlie apex, transverse, except through a short space in the middle, where the margin is abruptly and strongly arcuate ; disk feebly convex, rather finely, sparsely, and irregularly jjunctate ; lateral basal canaliculations sinuate, narrow and strong toward the base, and continued posteriorly for a short distance on the elytra, the latter portion being straight and slightly nearer the median line, becoming obsolete anteriorly on the pronotum slightly beyond the middle. Scutellura completely invisible. Elytra at base as wide as the pronotum ; sides parallel for two-thirds the length from the humeri, and moderately arcuate ; disk acutely rounded behind, nearly three-fifths longer than wide, and more than twice as long as the head and pronotum together, widest at two-fifths the length from the base ; disk moderately convex above, strongly and rather abruptly declivous at the sides, strongly, rather coarsely, closely, and evenly punctate ; punctures rounded, without visible arrangement, and finer toward the sides. Abdomen polished, convex, with a few rather large widely scattered punctures near the base ; last three segments very short. Legs slender ; femora and basal half of the tibiae reddish-testaceous, remainder piceous-black ; first joint of the posterior tarsi slightly shorter than the next two together. Length 1.9—2.0 mm.
California, 2.
Tins species somewliat resembles ajfftnis, but differs in its much more slender form, and greatly in tlie coloration; the elytral punctuation is coarser than in that species. The female is broader and more rectangular in outline than the male, but does not differ in color or punctuation. There is no trace of a raised front margin on the head. Although aware of the variations ascril)ed by Dr. Sharp to affinis, I cannot consider this form as one of them, the much narrower shape, denser and coarser punctuation, and relatively longer prothorax abundantly distinguisliing tliem without taking into account the intense blackness of nigrinus.
HELOPIIORUS Fab.
H. palleilS n. sp. — Form slender. Color above pale brownish-tlavate, almost without iridescence, except a slight amount on the elevated portions of the pronotum ; head darker ; under surface dark piceous-brown, coxae same, legs pale brownish-flavate, last joint of tarsi darker distally; antennae and palpi pale, the former slightly darker toward tip. Head one-half wider than long, constricted immediately in front of the eyes into a short broad muzzle, very broadly rounded anteriorly, angles narrowly rounded, and sides rather feebly convergent anteriorly; eyes large and prominent; epistomal groove very strong, originating at the anterior extremity of the eyes, broadly angulate posteriorly ; at the angle it is continued to the base by a strongly marked triangular excavation ; clvpeus very large, one-half wider than long, broadly swollen along the middle longitudinally ; surface uneven, a confused
82 NORTH AMERICAN mixture of flat tulxTcles and small punctures, very feebly iridescent ; labrum black, very short and broad, broadly angnlate, over six times as wide as long ; antennae very short, scarcely as long as the head, first joint rather robust, strongly narrowed toward base, nearly twice as long as wide, second conical, rapidly narrowed toward tip, as wide at base as the tip of the first, bases in contact throughout, slightly shorter than the first, third very slender, cylindrical, slightly shorter than the second, fourth two-thirds as long as the third, equal in thickness, fifth trapezoidal, wider than long, sides convergent toward base, the outer very strongly so, the inner very feebly, the outer angle being much further from the axis of the antenna than the inner, remaining three joints broader than long, truncate at tip, except the eighth, which is broadly rounded, compressed, pubescent, joints one to five glabrous. Prothorax much wider than the head, three-fonrths wider than long; sides feebly convergent from the apex to the base, feebly angnlate at the anterior third, elsewhere nearly straight ; apex very slightly longer than the base, broadly eniarginate throughout, bottom of the emargination very bioadly and feebly arcuate, sides very widely divergent anteriorly ; base very broadly angnlate, middle portion very slightly more strongly produced and rounded; apical angles acute, posterior obtuse, but not at all rounded ; disk very slightly convex, having seven narrow longitudinal furrows, and six flat elevations, the latter finely sub-verrucate, each flat tubercle having a small distinct puncture; median channel narrow and straight, second irregularly twisted ; sides feebly reflexed, and very finely, feebly, and evenly undulated along the edge. Elytra at base equal in width to the pronotum ; disk widest at three-fifths its length from the base, where it is about one-fourth wider than the pronotum, twice as long as wide, acutely rounded behind ; sides arcuate; strongly convex; feebly striate, striae very strongly punctate; punctures round, very deeply impressed, much closer than the width of the intervals, which are very feebly convex, each having a regular row of very fine punctures along the crest ; humeri prominent, prominence elongate. Scutellum excessively minute, nearly circular, black, flat, about one-half wider than one of the strial punctures. Legs long and slender ; anterior tibiae rather strongly sigmoid, wider toward tip, fimbriate along the outer side with two rows of very small spinules, the upper row longer and much more widely spaced ; terminal spines small, equal, and arcuate ; corresi>onding tarsus rather slender, first joint shorter than the second, next three equal, fifth as long as the first four together ; claws abruptly swollen at base ; last joint of the posterior tarsi very much shorter than the preceding together. Mesosternuin feebly, but very distinctly carinate ; middle coxae narrowly separated. Abdominal segments nearly equal in length, strongly opai^ue and grauulose, sparsely pubescent. Length 3.13—3.8 mm. Arizona (Morrison), 3.
Till' clytrji an' inaculalt' witli a tew narrow longitudinal dashes of dark casiancous, especially three spots lieliind the middle, one sutural and two lateral.
At'ler vainly endeavoring by every means to see nine joints in tlie aiitemiai', I iiave given it vip and am eom[)elled to state that I can
COLEOPTEKA. 83 see hut eiirlil joints in this species ; in Say's linpnfiis, however, there are nine distinct joints, the fourth above described l)ein.ir divided. The exposed surface of tlie cardo of tlie maxilhi is variously sculptured in the different species of lielophorus, being in some ornamented with oblique grooves, giving it the a[)pearance of a flatthreaded screw, in others confusedly channeled, and in others punctate. PHILHYDRUS Sol.
P. angustllllis n. sp. — Form elongate, elliptical, very convex, much more than twice as long as wide ; upper surface pale brownish-flavate throughout; under surface dark piceous ; tibiae and tarsi alone paler and similar in color to the upper surface ; palpi and antennae slightly paler, club of the latter piceous-black ; upper surface polished and glabrous. Head one-half wider than long, rather convex ; anterioi- margin broadly rounded, abruptly more strongly so at the sides ; epistomal suture broadly angulate, sides straight, situated almost at the posterior third of the dorsal surface ; from the angle along the occiput to the base there is a very feeble narrow line ; surface rather finely, closely, evenly, and somewhat strongly punctate ; antennae about as long as the head, basal joint as long as the next two together, narrowed toward base, rather slender, second as wide at base as the first, conical, narrowed toward tip, third as long as the fourth and fifth together, the latter transverse, sixth more than twice as wide as long, trapezoidal,sides very strongly convergent toward the base, the outer side much more strongly so, and the outer angle further from the antennal axis than the inner, club nearly as long as the eutire remainder of tlie antenna, loose, joints of equal width, first two trapezoidal, eleventh as long as the preceding two together, strongly flattened, elongate, oval at tip ; maxillary palpi about one-half longer than the antennae, very slender, third joint very slightly shorter than the second, fourth about two-tliirds as long as the third. Prothorax widest at the base, where it is slightly more than twice as wide as long ; sides rather feebly arcuate ; apex broadly emarginate, about two-thirds as long as the base, which is nearly transverse ; basal angles broadly rounded, apical rather acutely so ; disk finely, closely, and strongly punctate. Elytra at base as wide as the pronotum ; humeral angles rounded ; sides parallel for about two-thirds the length, and feebly arcuate ; disk rather acutely rounded behind, obtuse at the immediate apex, very convex, about three-fifths longer than wide, very slightly more than twice as long as the head and prothorax together, moderately finely, closely, very deeply, and evenly punctate ; sutural striae distinct and feebly arcuate in the posterior two-tliirds, completely obsolete in the anterior third. Scutellura longer than wide, sides straight, acutely rounded at tip, finely and closely punctate. Abdomen nearly fiat, sunken far within the elytra at the sides, finely and distinctly ruguloso-granulate, and finely and somewhat densely pubescent. Legs slender; terminal spurs of the posterior tibiae extremely unequal.Mesosternnmveryfeeblycarinate,exceptabruptlyneartheposterior extremity, where it rises almost as a thick acuminate erect tooth or tubercu-
84 NOKTII AMERICAN lation. First joint of the posterior tarsi short, extremely obliquely truncate at tip. Length 3.3-i.tJ min.
Sea-beaclies of New Jersey, 8.
A common littoral species, distinguislied by its pale color, very narrowly oval form and punctuation. Tlie last three joints of the antennae forming the club <ire abruptly nearly black, all the preceding joints being very pale ; the sixth joint, although nearlv as wide at apex as the succeeding ones, does not in my opinion form part of the club.
C0L03r Herbst.
C decoi'is n. sp. — Form regularly elliptical, nearly two and one-half times as long as wide ; very convex ; head piceous ; prothorax paler, piceousbrown, hind angles and base gradually paler from diaphaneity : elytra pale ochreous-yellow, under surface and legs same ; antennae dark reddish-brown, very slightly pal(U- toward base and at the tip; pubescence pale yellowish, dense and coarse on the elytra, more fine and sparse on the pronotum. Head strongly deflexed, as wide as long, rather densely pubescent; eyes rather large and prominent, sparingly setose ; interocular surface feebly and evenly convex, polished, coarsely, very deeply and evenly punctate; punctures round, so deep as to appear like perforations, slightly narrower than the interspaces, finer and more close toward the labrnm, which is small, transverse,and constricted slightly at base ; antennae short, slightly longer than the width of head, club very prominent, four-jointed ; third joint equal in length to the second, slightly thinner, longer than wide, fourth scarcely longer than wide, as thick as the third, fifth trapezoidal, twice as wide as long, shorter than the fourth, sixth and seventh very short, trapezoidal, nearly three and four times as wide as long respectively, eighth longer than the two preceding together, trapezoidal, one-third wider than long, joints five to eight gradually and connectively increasing in width to the apex of the eightli, where the club reaches its maximum thickness, and is thence cylindrical and very compact to the tip, ninth and tenth equal, shorter than the eighth, about twice as wide as long, eleventh wider than long, very broadly rounded at tiji. Prothorax widest at two-thirds its length from the apex, where it is nearly one-half wider than long ; sides thent-e just visibly convergent posteriorly, more strongly convergent anteriorly, nearly evenly arcuate throughout ; apex broadly arcuate, three-fifths as long as the base, which is broadly and very feebly arcuate, ahrujttly slightly more strongly so toward the midtlle ; basal angles obtuse and not rounded; disk strongly convex, coarsely, strongly, and sub-variolately punctate, punctures very irregularly and loosely scattered, at many spots arranged in very straggling broken series, interspaces finely and feebly punetulate, polished. Elytra at base as wide as the pronotum; sides parallel for three-fifths the length from the humeri, thence gradually convergent behind, obtusely rounded at the immediate apex ; disk strongly convex, widest at alwut one-third its length from tiie humeri, where it is fully three-fourths huiger than wide, with the