316 BULLETIN 14 5, UNITED STATES NATIONAL MUSEUM 



transverse between the antennae, broadly and rather deeply, arcuately 

 emarginate in front, and the clypeal suture distinct; antennae ex- 

 tending slightly beyond middle of pronotum, serrate from the fifth 

 joint, and the outer joints as wide as long; eyes large, broadly oval, 

 and slightly more acutely rounded beneath than above. 



Pronotum slightly wider than long, about equal in width at base 

 and apex, and widest at middle ; sides feebly, arcuately rounded from 

 apical angles to behind middle, then obliquely narrowed to the pos- 

 terior angles, which are rectangular; when viewed from the side the 

 mrginal and submarginal carinae are feebly sinuate, narrowly sepa- 

 rated anteriorly, and connected to each other behind the middle; 

 anterior margin strongly sinuate, and the median lobe rounded 

 and strongly produced ; base feebly, arcuately emarginate at middle 

 of each elytron, the median lobe broadly rounded, and feebly emar- 

 ginate in front of scutellum ; disk moderately convex, with a broad, 

 shallow median depression extending from near anterior margin to 

 base, a broad, shallow depression on each side along lateral margin, 

 and with sharply defined, straight prehumeral carinae; surface 

 obsoletely granulose, finely but not deeply rugose, finely, sparsely 

 punctate between the rugae, which are more or less transverse at 

 the middle, and sparsely clothed with short, inconspicuous, white 

 hairs. Scutellum strongly, transversely carinate, and the surface 

 densely reticulate. 



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

 at base and apical third; sides nearly parallel for a short distance 

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

 expanded behind middle, then obliquely narrowed to the tips, which 

 are rather acutely rounded, and coarsely serrulate ; sides of abdomen 

 narrowly exposed above; disk slightly flattened, the sutural margins 

 rather strongly elevated behind the middle, and with broad, moder- 

 ately deep basal depressions; surface finely, densely imbricate-punc- 

 tate, and sparsely, uniformly clothed with short, recumbent, white 

 hairs. 



Abdomen beneath sparsely, finely punctate, the punctures con- 

 nected transversely by sinuate lines, which are coarser on basal 

 segment, and sparsely, uniformly clothed with short, recumbent, 

 white hairs; first segment convex at middle; vertical portions of 

 segments not conspicuously pubescent; pygidium longitudinally 

 carinate, but the carina not projecting. Presternum finely, sparsely 

 punctate, and densely clothed with long, erect, fine hairs; prosternal 

 lobe broad, feebly declivous, and broadly subtruncate in front ; pros- 

 ternal process rather broad, the sides nearly parallel to behind the 

 coxal cavities, then strongly narrowed to the apex, which is acute, 

 Posterior coxae with the posterior margin slightly sinuate, and the 



