314 BULLETIN 63, UNITED STATES NATIONAL MUSEUM. 



Projdeurai smooth, obsoletely punctulate, and more or less feebly 

 rugulose. 



Elytra elongately oval, smooth, widest at the middle, sometimes 

 more posteriorly; hase truncate and at times just noticeably wider 

 than the contiguous prothoracic base; humeri obtusely angled, not 

 rounded nor prominent ; sides evenly arcuate, obliquely narrowing in 

 apical third, apex not very narrowlj'^ rounded; disc depressed, feebly 

 convex, sides more or less suddenly inflexed and almost evenly 

 rounded, quite evenly and arcuately declivous posteriorly; surface 

 nsually obsoletely punctulate or finely and irregularly so, a serial 

 arrangement often evident, the interstitial punctures of the same size 

 as those of the series, often very feeble and eroded striae are evident ; 

 punctules usually denser on the sides and apex, those about the latter 

 with small brownish hairs. 



Epijjleurce moderately wide, gradually narrowing from base to 

 apex, superior margin rather strongly defined, especially toward apex, 

 beneath the humeri feebly and broadly sinuate; surface at times 

 feebly concave, smooth, obsoletely punctulate, and more or less feebly 

 rugulose. 



Sterna rather smooth, more or less obsoletely and sparsely punctate, 

 rugose. 



Parapleural, rather evenly and not densely punctate. 



Ahdomen finely and sparsely punctulate, more densely so on the 

 fifth segment, where it is also more or less finely setose along the 

 margin. 



Legs moderate in stoutness and somewhat long; femora mutic, 

 finely and sparsely punctate, the profemora very feebly sinuate in 

 apical fifth; anterior and middle tibia? more or less strongly con- 

 stricted at base; anterior tibial spurs similar in the sexes, the ante- 

 rior a little stouter and just a little longer than the posterior, both 

 acute. Anterior tarsi dissimilar in the sexes. 



Male. — Rather narrow, elongately oblong-ovate. Antenna* attaining 

 the base of the prothorax, the latter with base equal to the length. 

 Elytra with the sides not strongly arcuate. Abdomen somewhat 

 obli(|ue nj)ically, rather feebly convex, broadly, more or less strongly 

 impressed on the first two segments, and the metasternum feebly con- 

 cave, the mesosternum i-ather prominent. Anterior tibiie suddenly 

 constricted at base: first joint of the anterior tarsi feebly thickened 

 at tip beneath and clothed with golden hairs. 



Female. — Rather more robust. Antemue not attaining the base of 

 the prothorax, the latter Avith the base less than the length. Elytra 

 more broadly oval, sides more strongly arcuate. Abdomen liorizontal 

 and moderately convex. Anterior tibia? moderately and rather grad- 

 ually constricted at l)ase; first joint of the protarsi scarcely thickened 

 at tip beneath, groove entire. 



