230 BULLETIN 14 5, UNITED STATES NATIONAL MUSEUM 



becoming longitudinal on the occiput, and clothed with a few short, 

 white hairs behind the epistoma; epistoma transverse between the 

 antennae, and broadly but not deeply, arcuately emarginate in 

 front; antennae extending nearly to middle of pronotum, serrate 

 from the fourth joint, and the outer joints about as wide as long; 

 eyes large, elongate, and about equally rounded above and beneath. 



Pronotum nearly one-third wider than long, slightly narrower at 

 base than apex, and widest near middle; sides arcuately rounded 

 from apical angles to near posterior angles, where they are nearly 

 parallel to each other; when viewed from the sides the marginal 

 and submarginal carinae are feebly sinuate, and narrowly separated 

 for their entire length; anterior margin slightly sinuate, and the 

 median lobe broadly rounded; base slightly emarginate at middle 

 of each elytron, the median lobe broadly rounded, but feebly pro- 

 duced in front of scutellum; disk moderately convex, with two round, 

 moderately deep median depressions, a broad, deep, oblique depres- 

 sion on each side along lateral margin at middle, and with very 

 strongly elevated prehumeral carinae; surface finely, densely granu- 

 lose, more or less transversely, coarsely rugose, finely, sparsely punc- 

 tate between the rugae, and clothed with a few short, indistinct hairs. 

 Scutellum strongly, transversely carinate, and the surface densely, 

 finely reticulate. 



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

 width at base and behind the 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 

 narrow to the tips, which are separately, broadly rounded, and finely 

 serrulate; sides of abdomen feebly exposed above; disk slightly 

 flattened, without a distinct longitudinal costa, the sutural margins 

 strongly elevated posteriorly, and with broad, moderately deep, basal 

 depressions; surface densely, coarsely imbricate-puncture, and nearly 

 glabrous. 



Abdomen beneath obsoletely granulose, sparsely, finely punctate, 

 more densely on basal segment, and sparsely, uniformly clothed with 

 short, recumbent, whitish hairs; first segment feebly flattened, and 

 without a median depression; last segment broadly rounded at apex; 

 vertical portions of segments not conspicuously pubescent ; pygidium 

 coarsely, sparsely punctate, but not carinate. Prosternum finely, 

 sparsely punctate, and sparsely clothed with short, recumbent, whit- 

 ish hairs; prosternal lobe broad, rather strongly declivous, and 

 broadly but not deeply emarginate in front ; prosternal process broad, 

 the sides parallel to behind the coxal cavities, then obliquely narrowed 

 to the apex, which is acute. Tibiae slender, nearly straight, and 

 without a distinct tooth at apex. Posterior tarsi distinctly shorter 



