COLEOPTERA. 91 



Male. — Head large, sub-quadrate ; eyes small ; interocular surface elevated 

 abruptly and very far above tliem, nearly flat above, baving two round, 

 nude, deeply impressed punctiform foveae on a line tbrough tbe eyes, and 

 mutually one-half more distant than either from the eye, joined by an ante- 

 riorly arcuate feebly impressed channel ; the portion of the head behind the 

 channel and foveae being impunctate, the remaining portions being finely, 

 densely, and strongly punctate ; surface between the foveae moderately con- 

 vex, having a short medial carina ; antennal tuberculations very large and 

 flat, surface between them not depressed, but strongly declivous anteriorly, 

 and produced as a short, broad muzzle, tuberculate in the middle anteriorly, 

 and dentate at the sides below, the teeth being densely setose ; beyond tiie 

 medial tubercle the surface becomes perpendicular, and at its foot the muzzle 

 is abruptly parrowed and produced as a flat triangular horn, which is deeply 

 notched at the vertex ; under the declivous, overhanging muzzle with its 

 bifid horn the head is deeply excavated posteriorly between the bases of the 

 antennae, the transversely truncate anterior margin of the clypeus being 

 directly under the tip of the horn ; the punctate portions of the front are 

 more densely pubescent, the hairs being short and coarse ; beneath, behind 

 the eyes, the pubescence is very dense and erect ; basal joint of the antennae 

 as long as the next two together, robust, second slightly longer and wider 

 than the third, joints three to eight almost exactly equal in width, nearly- 

 quadrate, ninth slightly wider, distinctly transverse and very feebly cuneate, 

 tenth abruptly much larger, almost exactly globular, eleventh as wide as the 

 tenth, elongate, nearly as long as the three preceding together, obliquely 

 acuminate at tip. Prothorax as wide as long. Pronotum and elytra nearly 

 as in denticollis, the basal margin of the latter being much more strongly 

 elevated, and the humeri not dentate. Basal carinae of first dorsal segment 

 more approximate and feeble. Metasternum canaliculate medially; posterior 

 tibiae having a similar terminal spur. Length (head extended) 2.0 mm. 



Stone Creek, Lee County, Virginia (Schwarz). 



The larger claw of the anterior tarsi is distinctly cleft near the tip 

 in the male. This is a very singular species, greatly I'esembling den- 

 ticolUs in nearly all its features exce[)t the head, which is entirely 

 different ; the punctuation of the inter-antennal portions of the head 

 is much more dense and fine in virginice. 



B. ateri'inilis n. sp. — Form slender. Color intense black throughout, 

 antennae and legs very dark rufo-testaceous ; integuments extremely highly 

 polished ; pubescence very sparse, coarse, and inconspicuous, except beneath 

 the head behind the eyes, where it is more abundant. Head large, sub- 

 quadrate, as wide as long ; eyes small, very convex ; interocular surface 

 elevated abruptly and very strongly above them, nearly flat above, having 

 two small, round, deeply impressed, spongy-pubescent fovae on a line with 

 the posterior limits of the eyes, and mutually one-half more distant than 

 either from the eye ; from each there is a feebly impressed, nearly straight 

 channel extending anteriorly, the two strongly convergent, and becoming 

 mutually obsolete between the antennae, making, with an imaginary line 



