278 BULLETIN 14 5, UNITED STATES NATIONAL MUSEUM 



terior angles where they are parallel ; when viewed from the side the 

 marginal carina is slightly sinuate, the submarginal carina nearly 

 straight, the two carinae widely separated anteriorly, and connected 

 to each other behind the middle; anterior margin slightly sinuate, 

 and the median lobe broadly but not strongly rounded; base feebly 

 emarginate at middle of each elytron, the median lobe feebly, 

 broadly rounded, and subtruncate in front of scutellum ; disk moder- 

 ately convex, with a broad, vague, elongate median depression, a 

 shallow, oblique depression on each side along lateral margin, and 

 with sharply defined, sinuate prehumeral carinae, extending from 

 base to near the middle; surface obsoletely granulose, coarsely, trans- 

 versely rugose at middle, and sparsely, finely punctate between the 

 rugae. Scutellum strongly, transversely carinate, and the surface 

 finely, densely reticulate. 



Elytra slightly wider than pronotum at base, and equal in width 

 at base and behind middle ; sides nearly parallel for a short distance 

 behind base, feebly, broadly constricted in front of middle, broadly, 

 arcuately expanded behind the middle, then obliquely narrowed to 

 the tips, which are separately, broadly rounded, and strongly ser- 

 rulate; sides of abdomen narrowly exposed above; disk feebly, longi- 

 tudinally depressed along sutural margins at middle, sutural mar- 

 gins strongly elevated posteriorly, and with broad, shallow basal 

 depressions; surface coarsely, densely imbricate-punctate, sparsely 

 clothed with short, inconspicuous hairs, and each elytron orna- 

 mented with indistinct pubescent spots as follows: A round spot in 

 basal depression, an elongate one in front of middle, and a round 

 spot at apical third. 



Abdomen beneath obsoletely reticulate, finely, sparsely punctate, 

 the punctures connected transversely by more or less distinct, sinuate 

 lines, which are coarser on the basal segment, and sparsely, uni- 

 formly clothed with short, recumbent, white hairs; first and second 

 abdominal segments feebly concave at middle, the concavity ex- 

 tending to middle of second segment, and sparsely clothed with 

 moderately long, fine, erect hairs; last segment broadly rounded at 

 apex ; vertical portions of the segments not conspicuously pubescent ; 

 pygidium sparsely punctate, and not distinctly carinate at middle. 

 Presternum finely, sparsely granulose, and rather densely clothed 

 with long, fine, erect hairs at middle, which extend along the middle 

 of body to middle of second abdominal segment; prosternal lobe 

 broad, moderately declivous, and broadly rounded in front; pro- 

 sternal process broad, the sides slightly expanded behind the coxal 

 cavities, then abruptly narrowed to the apex, which is acute. 

 Tibiae slender, straight, and the anterior and middle pairs armed 

 with a short tooth on inner margin at apex. Posterior tarsi dis- 



