AMERICAN COLEOPTERA 327 



not broader at base than thorax, humeri not prominent, sides in front slightly 

 divergent, then broadly rounded, surface finely striate, striae punctured, inter- 

 vals flat, densely punetulate, clothed with yellowish cinereous pubescence- 

 color ferruginous, gradually becoming piceous at the sides in front, at base and 

 at base of suture. Pygidium broadly oval, densely punctured, a shallow fovea 

 on each side, surface cinereo-pubescent, median line paler. Beneath black- 

 finely punetulate and cinereo-pubescent. Legs jDale rufous. Length .10 inch ; 

 2.5 mm. 



The pubescence of this species is rather longer than in any of the 

 group. The elytra gradually pass from the ferruginous color to pice- 

 ous, the latter color forming a narrow space along the base, down the 

 sides to middle and to the same extent along the suture. 



One specimen from Texas in the cabiuet of Mr. Ulke. 



15. iiigriiius. n. sp.— Broadly oval, robust, black, feebly shining, very 

 sparsely clothed with brownish pubescence. Head black, punctured, front ob- 

 soletely cariuate. Antennae as long as head and thorax, black, four basal joints 

 rufous. Thorax nearly twice as wide at base as long, base lobed at middle, on 

 each side sinuate, sides rounded in front, straight and divergent to base; sur- 

 face black, feebly shining, densely punctured, very sparsely clothed with short 

 brownish hair, and a fine cinereous line at middle and a small spot on each 

 side at the basal margin. Scutellum emarginate at tip, clothed with whitish 

 pubescence. Elytra as broad as long, disc sub-depressed, at base not wider 

 than the thorax, sides strongly arcuate, surface striate, striae distantly punc- 

 tured, intervals flat, densely punctulato-rugose, color black, moderately shin- 

 ing. Pygidium oval, black, coarsely punctato-rugose, sparsely cinereo-pubes- 

 cent. Body beneath black, more shining than above, densely punetulate, 

 sparsely pubescent. Femora and tibiae at basal half black, apex rufous. Tarsi 

 rufous. Length .12 — .14 inch; 3 — 3.5 mm. 



Resembles in form B. cruentatus, but differs by the absence of 

 elytral red spot, more opaque and rugose surface and more coarsely 

 punctured thorax. 



Three specimens from Middle States. Cabinet Leconte. 



B. pruiiiinus, n. sp. — Robust; oval, black, moderately shining, sparsely 

 clothed with whitish pubescence, giving the species a pruinose aspect. Head 

 black, densely punetulate, very sparsely pubescent, front sub-carinate. An- 

 tennae as long as head and thorax, black, four basal joints rufous. Thorax 

 nearly twice as wide at base as long, base at middle lobed, on each side sinu- 

 ate, sides arcuate and gradually narrowed to" apex; surface moderately convex^ 

 densely and rather finely punctuate, black, moderately shining, sparsely 

 clothed with whitish pubescence. Scutellum small, rounded, densely clothed 

 with whitish pubescence. Elytra longer than broad, at base slightly broader 

 than thorax, humeri not prominent, sides feebly arcuate; surface very finely 

 striate, striae^ punctured, intervals flat, moderately shining, densely but very 

 finely punetulate. Pygidium oblique coarsely and sparsely punctured with 

 fine punctures densely intermixed, clothed sparsely with cinereous pubescence. 

 Body beneath black, densely and finely punetulate, sparsely clothed with 



