C'OLEOPTEKA. 109 the sinuous portion having tufts of fine pale setae projecting posteriorly ; the terminal segment is lozenge-shape, slightly broader than long and more acutely angulate anteriorly than posteriorly, surface flat, very minutely punctulate, and carinate along the middle. Tlie under surface of the head in both sexes is strongly and coarsely punctate, but does not possess the erect sensitive setae. The species is recognizable at a glance by its parallel depressed form and very large flat head.
12. E. pertenilis n. sp. — Form very slender ; sides parallel. Pubescencetine, short, rather dense and conspicuous on the elytra and abdomen ; color throughout dark ferruginous-red ; integuments slightly rough, finely and very indistinctly punctulate and nearly opaque. Head very large, nearly as long as wide ; eyes large, round, not prominent, scarcely visible from above ; genae very long, convergent, arcuate, longer than the eye ; base broadly and rather strongly sinuate ; interocular surface nearly flat above : punctures distinct and isolated laterally ; having at nearly one-half the length from the base two very small shallow spongy-pubescent foveae, mutually but very slightly more distant than either from the eye, from which there extend anteriorly two narrow convergent rather deeply impressedchannels, connected behind the frontal ridge by a short straight transverse channel equally wide and deep ; intermediate surface strongly convex and somewhat abruptly declivous anteriorly; supra-antenual tuberculations not distinct, squarely angulate over the antennae, connected by the feebly arcuate and rather prominent frontal ridge ; antennae very short and robust, joints three to ten transverse, joints nine and ten equal in length and no longer than the eighth, the former two and one-half times, the latter more than three times as wide as long, eleventh slightly wider than the tenth, scarcely longer than wide, conoidal, acuminate ; labrum small, deeply bilobed ; maxillary palpi i-obust, third joint small, transversely cuneate, second very robust at tip, fourth conical, finely acuminate, not twice a.s long as wide. Prothorax widest slightly before the middle where it is slightly narrower than the head and just visibly longer than wide ; sides at this point rounded, feebly sinuate anteriorly, nearly straight posteriorly ; apex one-half as long as the pronotal width and four-fifths as long as the base ; disk strongly convex, having just before the centre a rather large oval impressed puncture, and, at one-fifth the length from the base, a transverse punctiform impression strongest posteriorly and extending laterally and anteriorly, the arms becoming obsolete before reaching the very small shallow lateral foveae situated at one-third the length from the base. Elytra at base scarcely perceptiblywiderthanthehead;sidesnearlyparallel.andveryfeeblyarcuate;. disk nearly one-fourth longer than wide, moderately convex : sutural striae strong, not very close, feebly arcuate, lateral very short, oblique and narrow ; humeri rather prominent. Abdomen at base very slightly narrower than the elytra; sides distinctly divergent posteriorly and straight, so that the third segment is slightly wider than the elytra and quite as wide as the head ; border rather strong; surface narrowly convex ; first three dorsal segments- Cont. Part 11. 4. Decembek, 1SS4.
110 NORTH AMERICAN equal in length ; first two with two short rather distant fine and excessively feeble carinae. Legs rather long, slender. Length 0.95 mm. "Washington, District of Columbia, 1 9.
This singular species is so different in shape from the usual typical form of the genus, and differs in so many of its minor characters that it almost seems as if it should be placed at least in a subgenus, and as far as possible removed from cannliculatus. The very robust maxillary palpi, bilobed labrum, and eyes scarcely visible from above but almost entirely so from beneath, are the most salient of these aberrant characters.
13. E. cavicollis Lee— Proc. Am. Phil. Soc. XVII. p. 387.— Form moderately robust ; color of head and prothorax dark piceo-rufous, of the elytra, legs and antennae paler, reddish-testaceous ; abdomen darker than the elytra ; pubescence rather abundant, coarse, setiforra and conspicuous ;' integuments polislied, punctate. Head large, very slightly wider than long, truncate anteriorly ; basal angles obsolete ; eyes rather large, moderately prominent ;' interocular surface having two deep straight strongly convergent channels beginning opposite the eyes and joined, just behind the strongly raised anterior edge of the epistoma, by a short arcuate groove ; intermediate surface strongly convex ; at the base of the occiput there is a short medial carina, and toward the sides the surface is densely, evenly and very minutely punctate ; antennal tuberculations prominent ; antennae moderately robust, as long as the head and prothorax together, penultimate joint as long as the preceding, twice as wide as long, eleventh as long as the three preceding together. Prothorax widest at one-third the length from the apex where it is very slightly wider than the head and distinctly wider than long ; sides thence very strongly convergent anteriorly and strongly sinuate, sliglitly less convergent posteriorly and nearly straight ; anterior margin much shorter than the base, feebly arcuate, the latter transverse ; disk strongly convex, finely and evenly punctate, punctures strong and widely separated ; near the base there is a very large nude pit-like impression, not connected with the lateral impressions which are \{?ry deep and irregular ; in the middle anteriorly there is a very feeble longitudinal impression which is so slight as to be scarcely visible. Elytra at base just perceptibly wider than the pronotum ; sides feebly divergent ; together transversely truncate behind ; suture about one-half longer than the pnmotum ; disk finely punctate, punctures arranged in rows near the suture, very minute ; sutural striae approximate, straight, rather strong ; tliere are also on each elytron at the base three impressed pits, the two exterior being arranged in a nearly longitudinal line, j)rolonged posteriorly by a very feeble impressed channel rapidly becoming obsolete; humeri prominently swollen. Abdominal segments increasing slightly in width ; first slightly narrower than the contiguouselytra; surface moderately convex, polished, inipunctate; border strong ; first two segments having two distant widely diverging prominent basal carinae. Legs rather sliort and robust ; tarsi narrower at base; claw long, rather strongly arcuate, testaceous. Length 1.4 mm.
COLEOPTERA. Ill Tampa, Florida, 3.
This extremely well-marked species is described from Dr. LeConte's type specimen ; all its characters are of pronounced singularity. The posterior extremities of the frontal canaliculations are scarcely perceptibly dilated, and do not, as far as I can observe, terminate in foveae as mentioned by Dr. LeConte.
Although possessed of a medial longitudinal impression on tlie anterior portion of the pronotum, I have included this species in the section without such canaliculation because of its excessive feebleness and diflfuseness, and on account of the analogy which the species bears to the latter in most of its characters.
14. E. crinitus Brend.— Proc. Phil. Soc. Phil. 1865, p. 260.— Form •rather robust; pubescence pale fiavo-cinereous, very dense, uniformly distributed,conspicuous, having a few much longer setae on the abdomen; color throughout pale ferruginous, legs and antennae not paler ; integuments feebly shining. Head much broader than long ; epistoma arcuate anteriorly; posterior angles obsolete; eyes rather large and prominent; interocular surface not punctate, having two round very deeply impressed foveae, pubescent at the bottom and on a line with the anterior portions of the eyes, mutually nearly twice as distant as either from the eye; intermediate surface entire, very convex ; anterior canaliculations strongly convergent and extremely feeble ; supra-antennal tuberculations very prominent ; antennae robust, tenth joint twice as wide as long, eleventh unusually slender, elongated, gradually acuminate toward tip, slightly longer than the three preceding together. Prothorax large, much longer and just visibly wider than the head, widest at one-third its length from the apex where it is very slightly wider than long ; sides thence very strongly convergent and slightly arcuate anteriorly, slightly less convergent and slightly sinuate posteriorly; anterior margin shorter than the base, nearly equally and feebly arcuate; disk moderately convex, very feebly punctulate ; having at onefourth the length from the base a very strong transverse canaliculation which is strongly cusped posteriorly in the middle, cusp-point but slightly dilated into a puncture, arms terminating laterally in small deeply impressedspongy-pubescent foveae. Elytra at base slightly wider than the pronotum ; sides just visibly divergent posteriorly, scarcely one-fifth longer than the width at base, rather strongly and evenly arcuate throughout ; together transversely truncate behind ; suture nearly one-half longer than _ the pronotum ; disk depressed, finely feebly and confusedly punctulate ; sutural striae outwardly arcuate, strong ; at the base of each elytron there is a longitudinal impression which entirely disappears at one-third the length posteriorly ; humeri prominent. Abdominal segments as wide as, the contiguous elytra ; sides parallel ; margin strong ; surface very feebly convex,confusedly and minutely roughened; first and second segments having at the base two short distant feeble carinae which are somewliat strongly divergent. Legs slender. Length 1.6 mm.
112 NORTH AMERICAN Detroit, Michigan, 1 ; Lee County, Virginia, 3.
The foiirtii joint of the ijiaxillary palpi is moderately robust and much longer than the first two together ; the tarsi are very slender with the second and third joints much elongated. The under surface of the head is covered densely with long erect setae, which are dilated at tip.
15. E. capitullllll n. sp. — Form somewhat robust. Pubescence fine, short, evenly distributed, rather close, pale fulvo-cinereous, color throughout reddish-testaceous or ferruginous ; legs and antennae scarcely paler. Head small, as wide as long; eyes large, moderately prominent ; genae prominent, acutely rounded, much smaller tlian the eye ; posterior margin broadly truncate and sinuate ; interocular surface highly polished and impunctate, having two rounded impressed spongy-pubescent foveae on a line with the middle of the eyes, connected by an anteriorly arcuate parabolic impressed channel of nearly equal depth throughout ; intermediate surface entire, rather strongly convex ; supra-antennal tubereulations elongated, prominent,connecting ridge wide, somewhat prominent and lower in the middle ; clypeus strongly rounded anteriorly ; antennae short, slender, scarcely more than one-third longer than the head, joints eight to ten equal in length, increasing uniformly in width, the latter twice as wide as long, eleventh much wider than the tenth, very robust, slightly longer than wide, conoidal, obtusely acuminate ; last joint of the maxillary palpi robust, not twice as long as wide, scarcely as long as the two preceding joints together; subcapital sensitive setae rather short and sparse. Prothorax widest at the middle where it is about as wide as long and much wider than the head ; sides thence rather less convergent anteriorly than posteriorly, very strongly arcuate in the former, distinctly sinuate in the latter direction ; apex about three-fifths as long as the base and much less than one-half the pronotal width, nearly transverse, base broadly arcuate ; disk strongly convex, shining, impunctate, having at one-fourth the length from the base a transverse posteriorly arcuate narrow groove, terminating at the sides in deep circular spongy foveae, and coalescent with the anterior limit of a very deep longitudinallyoval medial impressed pit which nearly attains the basal margin and is slightly spongy-pubescent at the bottom. Elytra at base slightly wider than the pronotum ; sides moderately divergent posteriorly and strongly arcuate ; together transversely truncate behind ; disk as long as wide, nearly one-half longer than the prothorax, rather strongly convex, shining, impunctate ; sutural striae distinct, close, nearly straight, lateral distinct, narrow, terminating at slightly more than one-half the length posteriorly; humeri jirominent. Abdominal segments distinctly narrower than the elytra ; sides parallel ; surface very strongly convex, highly polished and impunctate ; first three segments decreasing uniformly in length ; first dorsal having at the base two very short robust parallel earinae. Legs long and slender; prosternal foveae large, transversely oval. Metasternum large, h<aving on each side at its anterior border a transverse strongly pubescent fovea. Length l.f) mm.
COLEOPTERA. 118 Tallahassee, Florida, 2 ; Ana Arbor, Michigan, 1.
The description is taken from one of the Tallahassee females, the specimen from Ann Arbor is a male, and the only difference to be observed besides the usual abdominal sexual characters, are the remarkablelunate, strongly swollen middle femora, and the more slender antennal club of the male. The head is if anything slightly smaller in the male than in the female. The metasternal and prosternal foveae are characteristic of the genus.
16. E. decorus n. sp. — Form rather slender. Color piceo-rufous ; elytra, legs aud antennae paler, tiavo-t'erruginous. Pubescence sliorl, fine, sparse and inconspicuous ; integuments sliining, those of the elytra distinctly translucent. Head large, robust, slightly longer than wide ; posterior angles broadly rounded ; eyes large, prominent, their own length in advance of the posterior angles ; interocnlar surface raised far above the eyes, ilat above, rapidly declivous on all sides,, most minutely and sparsely punctulate, having two deeply imj^ressed circular sjiongy-pubescent foveae on a line with the posterior third of the eyes, and mutually one-half more distant than either from the eye ; intermediate surface feebly convex aud entire ; canalioulations rapidly convergent, very feeble and becoming obsolete anteriorly ; supra-antennal tuberculations large, rounded, prominent ; intermediate surfaceslightly depressed ; epistoma rather strongly and evenly rounded anteriorly: antennae very short, very slightly longer than the head, second joint more robust than the first, sub-globular, penultimate joints very short, extremelytransverse; tenth over four times as wide as long, acute laterally, eleventh very robust, ovoidal, obtusely acuminate, nearly as long as the five preceding joints togetlier, very densely pilose. Prothorax widest in the middle where it is slightly wider than the head and nearly one-fourth wider than long ; sides thence very strongly convergent anteriorly and posteriorly, slightly more strongly so in the former direction in which they are very strongly arcuate, feebly sinuate in the latter ; apex distinctly shorter than the base, feebly and equally arcuate ; disk moderately convex, very finely rather feebly and evenly i^unctulate, having at one-fifth the length from the base a deeply impressed narrow posteriorly cusped groove, cusp-point slightly enlarged as a nude punctiform impression nearly attaining the base, arms nearly straight laterally, terminating at the sides in two circular deeplyimpressed spongy-pubescent foveae. Elytra nearly quadrate, at base just visibly wider than the pronotum ; sides rather feebly divergent posteriorly, strongly and evenly arcuate ; together transversely truncate behind ; disk moderately convex, finely rather closely and very feebly punctulate, darker at the base and apex ; sutural striae fine, approximate and straight, each originating in a puncture near the base just exterior to which there is a second very feeble puncture, and still exterior, nearer the base and distinctly nearer the humeri than the suture there is a much larger punctiform impressionwhich is continued posteriorly by a feeble broadly impressed illdefined stria, arcuate externally and gradually approaching the suture, becoming obsolete at one-fifth the length from the posterior margin. Abdo-
114: NORTH AMERICAN" minal segments ilistinctly narrower than the elytra ; sides nearly parallel : surface strongly convex, finely rather closely and evenly punctulate ; first two dorsals with two extremely short widely divergent and very widely separated basal carinae. Legs long and slender. Length 1.4 mm. Cohjmbiis, Texas, 1.
Tlie fourth joint of the maxillary pal[>i i.s large, actiminate and widest near the base. The under surface of the head in the type specimen does not possess the loose pad of sensitive setae, but the setae appear to have been removed by abrasion.
17. E. arciiatllS Lee. — Bost. Journ. VI, p. 10(3. — Form very moderately robust : color throughout ferruginous, legs and antennae slightly paler and more tlavate ; pubescence short, fine, sparse and rather inconspicuous ; integumentshighlypolished.HeadveryslightlywidertJianlong;]X)sterior angles rather pronounced, narrowly rounded ; eyes small, prominent ; interocular surface impnnctate, having two small round spongy-pubescent foveae on a line with the midille of the eyes and mutually twice as distant as either from the eye ; intermediate surface entire, strongly convex ; canaliculations strongly convergent, feebly impressed, short and joined anteriorly by a broadly arcuate channel behind the transverse epistomal ridge which is moderately prominent; supra-antennal tuberculations elongated, rather conspicuous,eachcrossedbyanarrowchannel;labrurathreetimesaswideas long, constricted at base, broadly sinuate anteriorly, angles rounded, bearingsix or seven setae along the anterior edge resembling those of Ilarpalus : antennae one-half longer than the head, very si>arsely setose toward the base, eleventh joint conical, acuminate, elongated, as long as the four precedingjoints together. Prothorax widest at the middle Avhere it is as wide as the head and slightly narrower than long ; sides thence equally and very strongly convergent anteriorly and posteriorly, very strongly arcuate in the former and feebly sinuate in the latter direction ; apex slightly shorter than the base, equally and feel)ly arcuate ; disk strongly and evenly c-onvex, impuuctate, having at one-fourth the length from tlie base a transverse channel in the form of a posteriorly pointed cusp, cusp-point slightly prolongedposteriorlyintheformofanudepunctiformimpression,armsterminating laterally in rather large nude deeply impressed foveae. Elytra at base just visibly wider than the pronotum ; sides somewliat strongly divergent, one-third longer than the width at base, strongly and evenly arcuate throughout : together transversely truncate behind ; suture scarcely onethird longer than the jironotum ; disk rather convex, impuuctate; sutural striae arcuate, feeble ; basal canaliculations mther strong, disappearing at one-third the length from the base ; humeral protuberances rather strong. Abdominal segments increasing very slightly in width, first slightly narrowir than the contiguous elytra ; surface imj)unctate, convex ; border strong ; first segment without dorsal carinae. Legs long and slender ; second joint of the posterior tarsi very slender, greatly elongated, nearly twice as long as the last joint. Length 1.0-1.2 nuu.
COLEOPTERA. 115 Georgia, 2 ; Virginia, 1.
The description is taken from Dr. LeConte's type wliich is a male. The maxillary palpi are moderately robust, first joint very short and slender, second nearly three times as long, very slender at base and extremely strongly clavate toward tip, third sub-globular slightly narrower than the tip of" the second, fourth nearly as long as the first three together, strongly fusiform, finely acuminate at tip and more than twice as long as wide. The pad of sensitive setae on the under surfoce of the head is rather sparse, and in one specimen, that I'rom Virginia, which I believe belongs to this species, appears to be altogether absent.
The insects of this genus are unusually well provided with sensory apparatus ; the spongy-pubescence at the bottom of the frontal and pronotal foveae, the well-developed antennal club and maxillary palpi, and the capitate setae of the inferior surface of the head, are a combinationof sense organs apparently rarely equaled in the larger insects of the order.
18. E. leTiceps n. sp. — Form rather slender. Pubescence short, fine, cinereoiis, somewhat conspicuous ; color throughout dark castaneous, anteriorportions of head, oral organs, legs and antennae pale reddisli-testaeeous. Head small, very slightly longer than wide ; eyes large, rather prominent ; genae obtusely rounded, not as long as the eye ; interocular surface very convex, shining, impunctate, having two very small deeply impressed spongy-pubescent foveae scarcely more widely separated than either from the corresponding eye and on a line with tlie middle points of the latter ; intermediate surface strongly and evenly convex ; from each fovea extends anteriorly a nearly straight rather deeply impressed canaliculation, the two being mutually feebly convergent and connected behind the feebly elevated clypeal ridge by a short very feebly impressed anteriorly arcuate channel ; supra-antennal tuberculations rounded and prominent ; antennae rather slender, one-half longer than tlie head, club robust, ninth joint as long as and very slightly wider than the eighth, slightly transverse, tenth scarcely longer than the ninth, two-thirds wider, eleventh slightly wider than the tenth, elongated, conoidal and acuminate, nearly as long as the four preceding joints together. Prothorax widest at one-third its length from the apex where it is slightly wider than the head and a little wider than long ; sides thence very strongly convergent anteriorly, feebly sinuate and feebly convergentposteriorly, evenly and distinctly arcuate; apex two-thirds as long as the base and one-half as long as the greatest pronotal width, both equally and feebly arcuate ; disk rather strongly convex, highly polished, most excessivelyfeeblyandminutelypunctulate;attwo-thirdsthelengthfromthe apex there is a transverse narrow deep and sharply defined furrow connecting a median and two lateral circular spongy-pubescent foveae, the median one rather dilated laterally and connected with the basal edge of the pro-
116 NOKTII AMERICAN notuin ])y a narrow strongly elevated carina. Elytra at base slightly wider than the pronotum ; sides but slightly divergent posteriorly and distinctly arcuate ; together transversely truncate behind ; disk slightly longer than wide, as long as the head and pronotum together ; rather depressed, shining and impunctate ; humeri small and prominent ; three punctures at the base of each elytron distinct; sutural striae parallel, arcuate, deeply impressed, other striae almost obsolete. Abdominal segments but very slightly narrower than the elytra; sides parallel and feebly arcuate ; surface polished and impunctate; first dorsal not carinate; under surface of same very finely and feebly punctulate. Legs long and slender ; prosternal coxal foveae distinct ; anterior coxae strongly conical, small ; metasternum continued posteriorly by a thin short transverse lamina which is densely fimbriate posteriorly with short yellowish setae ; two terminal segments very short and transverse. Length 0.9-1.1 mm.
Washington, District of Columbia, 1; Deer Park, Maryland, 1. The terminal segment of the male has two parallel arcuate carinae. Tiie above description is taken from the Washington female. The species may be distinguished from rnjiceps by its larger size, more robust form especially of the elytra and abdomen, by its nearly piceous-black color, and especially by the shape of the pronotum which is much more transverse, and in which the sides are not parallel but distinctly convergent behind. The head is much shorter and broader than in rvjiceps.
19. E. rilficeps Lee. — Sm. Misc. Coll. 1G7, p. 28. — Form slender ; color of head, prothorax, abdomen, legs and antennae dark piceons-brown, elytra slightly darker, blackish ; pubescence sparse, short and fine ; surface highly polished. Head rather large ; front having two small circular pits, equidistantfrom each other and the posterior limits of the eyes, spongy at the bottom and connected by an impressed furrow which is very strongly arcuate anteriorly; antennae very short and robust, scarcely one-third longer than the head, last joint large, as long as the five preceding joints together, conical, finely acuminate at tip, penultimate nearly three times as wide as long. Prothorax equal in width to the head, very slightly wider than long ; anterior and posterior margins arcuate, tlie former most strongly so ; anterior and posterior angles obsolete, very broadly rounded ; sides parallel and nearly straight ; disk impunctate, moderately convex, having in the middle near the base two large circular spongy impressions separated by a distinct longitudinal carina, also at each side just behind the middle an equally large circular spongy impression. Elytra at base very slightly wider than the head; sides very feebly divergent, feebly arcuate near the apices, one-fourth longer than the width at V)ase ; together transversely truncate behind: suture fully one-half longer than the pronotum ; disk impunctate, almost glabrous ; sutural striae deep, feebly arcuate and close, each originating in a densely pubescent puncture near the base and very close to the suture ; each elytron also has two elongated impressions at the base, the outer ones being much the stronger. Abdomen narrower than the elytra ; border