14 PROCEEDINGS OF THE NATIONAL MUSEUM vol.66 



with a rather strong purplish tinge, and more shining than above; 

 legs aeneo-viridis, and the tarsi blackish; antennae aeneous at base, 

 becoming piceous toward apex. 



Head with the front rather narrow, nearly flat, sides strongly 

 arcuately expanded at vertex, and without distinct depressions; sur- 

 face densely coarsely granulose, and coarsely scabrous on the front, 

 becoming coarsely, longitudinally rugose on the occiput, and clothed 

 with a few long recumbent cinereous hairs behind the epistoma; 

 epistoma broadly, but not very deeply arcuately emarginate 

 in front; antennae short, not reaching to midde of pronotum, 

 and serrate from the fourth joint. Pronotum one and one-half 

 times as wide as long, slightly wider in front than behind, and 

 widest at apical third; sides feebly arcuately rounded from apical 

 angles to behind the middle, then nearly parallel to the posterior 

 angles, which are rectangular, when viewed from the side the lower 

 margin is straight, the upper one extending obliquely from the 

 anterior margin to the lower lateral margin at middle, and widely 

 separated from it anteriorly; anterior margin feebly, arcuately 

 emarginate, with a broadly rounded median lobe; base strongly 

 emarginate at middle of each elytron, with a broadly rounded median 

 lobe, which is broadly truncate in front of scutellum ; disk moderately 

 convex, with a round shallow median depression in front of scutel- 

 lum, and on each side with a rather deep depression extending 

 arcuately around the inner side of the lateral carina to the lateral 

 margin at middle, the lateral carina broadly elevated, but not 

 sharply distinct, and extending arcuately from the posterior angle 

 to lateral margin near middle, but not connected to it; surface 

 coarsely and densely rugose, the rugae more or less transverse on 

 the disk, but becoming more irregular toward the sides, the intervals 

 densely granulose, with numerous fine . punctures along the rugae, 

 and sparsely clothed with rather short cinereous hairs in the de- 

 pressed areas. Scutellum strongly transversely carinate, and strong- 

 ly acuminate at apex; surface finely and densely granulose. Elytra 

 slightly wider than pronotum at base; sides parallel for a short 

 distance behind base, broadly arcuately constricted at middle, 

 broadly expanded at apical third, then obliquely narrowed to the 

 tips, which are separately obtusely rounded, and strongly dentate; 

 sides of abdomen narrowly exposed above; disk feebly convex, and 

 each elytron with a broad, rather deep basal depression, and an obso- 

 lete longitudinal depression along the sutural margin, which is feebly 

 elevated posteriorly ; surface coarsely and densely imbricate-punctate, 

 and densely, finely granulose. Abdomen beneath finely and sparsely 

 punctate, the punctures more or less transversely connected b}^ striae 

 on the basal segment, very sparsely clothed with short recumbent 



