238 BULLETIN 14 5, UNITED STATES NATIONAL MUSEUM 



from apical angles to behind the middle, then more strongly nar- 

 rowed to near the base, where they are parallel, with the posterior 

 angles feebly projecting outward; when viewed from the side the 

 marginal carina is strongly sinuate, the submarginal carina feebly 

 sinuate, the two carinae broadly separated at apical third, and 

 connected to each other at the base and apex ; anterior margin f eebty 

 arcuately rounded, without a distinct median lobe; base feebly emar- 

 ginate at middle of each elytron, and the median lobe feebly, broadly 

 rounded; disk moderately convex, with a shallow, oblong, median 

 depression anteriorly, a broad, shallow, oblique depression on each 

 side along lateral margin at middle, and with distinct, long pre- 

 humeral carinae. extending from base to middle, and nearly parallel 

 with the marginal carina; surface densely, finely granulose, with 

 vague, irregular, crenulate rugae, sparsely, finely punctate between 

 the rugae, and sparsely clothed with long, recumbent, whitish hairs 

 in the lateral depressions and along the inner side of prehumeral 

 carinae. Scutellum not transversely carinate, and the surface finely, 

 densely reticulate. 



Elytra about as wide as pronotum at base, and about equal in 

 width at base and apical third; sides feebly sinuate or nearly parallel 

 for a short distance behind the base, feebly, broadly constricted 

 in front of middle, broadly, arcuately expanded at apical third, then 

 obliquely narrowed to the tips, which are separately, rather narrowly 

 rounded, and finely serrulate ; abdomen broadly exposed above ; disk 

 feebly, longitudinally depressed along pubescent vittae, sutural mar- 

 gins strongly elevated posteriorly, and the basal depressions broad 

 and very shallow; surface densely, coarsely imbricate-punctate, and 

 the vittae composed of sparsely placed, moderately long, recumbent, 

 whitish hairs. 



Abdomen beneath finely, sparsely punctate, slightly rugose on 

 basal segment, and rather densely clothed with moderately long, re- 

 cumbent, whitish pubescence, the hairs having a tendency of forming 

 more or less distinct spots at the sides of the segments ; first segment 

 convex at middle, without a median groove; last segment broadly 

 rounded at apex ; vertical portions of segments rather densely pubes- 

 cent; pygidium without a projecting carina. Presternum finely, 

 densely granulose, sparsely, finely punctate, and rather densely clothed 

 with long, recumbent, whitish pubescence; prosternal lobe broad, 

 feebly declivous, and broadly, very feebly emarginate in front; pro- 

 sternal process broad, slightly expanded behind the coxal cavities, 

 then abruptly narrowed to the apex, which is acute. Tibiae slender, 

 straight, and without a distinct tooth on inner margin at apex. 

 Posterior tarsi slightly shorter than the tibiae, and the first joint as 

 long as the following two joints united. Tarsal claws similar on all 



