AMERICAN COLEOPTERA. 339 



sparsely cinereo-pubescent, pubescence frequently and irregularly interrupted 

 by transverse nude spaces at the-positions of the coarse punctures. Pygidium 

 black, broadly oval, sparsely punctured and pubescent. Body beneath black, 

 moderately shining, sparsely pubescent. Anterior and middle legs rufous, hind 

 legs nearly black, hind femur at tip rufous and armed beneath with a tooth and 

 two denticles on its vertical face. Length .10 inch; 2.5 mm. 



In form and the arrangement of the elytral pubescence this species 

 resembles alboscutellatus, from which it may at a glance be distin- 

 guished by the form of the scutellum. The thorax is less punctured 

 and more smooth than any species except amicus. Say, in his descrip- 

 tion, admits but one tooth to the hind femur, but on examination I 

 find two denticles quite distinct on the vertical face of the tooth, a 

 character unknown to any other of our species. 



Occurs in Pennsylvania, Georgia aud Tennessee. 



B. loilgistilllS, n. sp. — Oblong oval, black, shining, sparsely pubescent 

 with white forming on the elytra an X-like design. Head black, sub-opaque, 

 densely punctulate. Antennae slightly longer than the head and thorax, 

 gradually thicker to tip, black. Thorax wider at base than long, sides rather 

 strongly arcuate and gradually narrowing to apex, base feebly lobed, surface 

 moderately shining, densely puuctured, very sparsely pubescent with white, 

 more evident between the sides and middle. Scutellum small, sub-quadrate, 

 sparsely pubescent with white. Elytra longer than wide, sides slightly arcu- 

 ate and somewhat broader behind the middle, surface moderately shining, 

 striate, stria? finely punctured, intervals flat, densely punctulate, very sparsely 

 pubescent with white, third interval with a very evident white line, diverging 

 from which on each elytron are two white lines, one directed forward, the 

 other backward, forming together a design, X-like in form. Pygidium broadly 

 oval, black, moderately convex, sparsely punctured and with very little pubes- 

 cence. Body beneath black, moderately shining, with sparse pubescence at the 

 sides. Anterior and middle tibiae pale rufous, their femora rufous and piceous 

 at base, hind femur piceous tipped with rufous, hind tibiae rufous, short, ter- 

 minal style very long and slender, tarsi of all the legs piceous. Length .08 

 inch; 2 mm. 



One of our smallest, yet a very distinct species. The hind tibiae, 

 aie shorter and rather stouter than usual, and the spur more than half 

 the length of the tibia. 



Two specimens, District of Columbia aud Tennessee. Ulke. 



B. Scliraukire, n. sp.— Oblong oval, black, moderately shining, sparsely 

 cinereo-pubescent. Head black, sub-opaque, finely punctured, sparsely pubes- 

 cent. Antennae two basal joints (alone remaining) rufous. Tho- 

 rax c ne-third broader at base than long, sides moderately strongly arcuate and 

 suddenly narrowing at apex, base moderately lobed at middle, surface coarsely 

 punctured and cinereo-pubescent. Scutellum broader than long, with white 

 pubescence. Elytra at base not wider than the thorax, sides continuing regu- 

 larly the curve of the sides of the thorax, humeral protuberance obliterated; 



