136 BULLETIN 14 5, UNITED STATES NATIONAL MUSEUM 



tion, opaque, and each elytron with three distinct golden yellow 

 pubescent spots; beneath aeneous, and more shining than above. 



Head with the front rather wide, nearly flat, about equal in width 

 at top and bottom, without distinct depressions, lateral margins 

 feebly arcuately expanded at middle, and with a feeble, longitudinal 

 groove extending from occiput to middle of front; surface coarsely, 

 densely punctate, somewhat transversely rugose on the front, becom- 

 ing longitudinally rugose on the occiput, and sparsely clothed with 

 moderately long,* semierect, cinereous hairs ; epistoma wide between 

 the antennae, and rather broadly, deeply, arcuately emarginate in 

 front; antennae extending to middle of pronotum, serrate from the 

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

 about equally rounded beneath and above. 



Pronotum nearly one-third wider than long, wider at apex than 

 base, and widest near middle; sides feebly, arcuately rounded from 

 apical angles to basal third, then strongly narrowed to the posterior 

 angles, which are rectangular; when viewed from the side the mar- 

 ginal carina is strongly sinuate, the submarginal carina nearly 

 straight, the two carinae widely separated at apical fourth, and 

 narrowly separated to the base; anterior margin rather strongly 

 sinuate, with the median lobe broadly rounded; base rather deeply 

 emarginate at middle of each elytron, the median lobe broadly 

 rounded and truncate in front of scutellum ; disk moderately convex, 

 with two broad median depressions, feebly separated at middle, a 

 broad, deep depression on each side along the lateral margin, and 

 with strongly elevated prehumeral carinae extending from base near 

 posterior angles to basal third ; surface densely, deeply, transversely 

 rugose, finely punctate between the rugae, rather densely clothed 

 with fine, erect, inconspicuous hairs, and the lateral depressions 

 densely clothed with long, recumbent, golden yellow pubescence. 

 Scutellum strongly, transversely carinate, and the surface finely 

 reticulate. 



Elytra about equal in width to the pronotum at base, and slightly 

 wider at base than just behind the middle; sides nearly parallel for 

 a short distance behind base, feebly, broadly, arcuately constricted in 

 front of middle, arcuately expanded behind middle, then obliquely 

 narrowed to the tips, which are separately, narrowly rounded, and 

 coarsely serrulate; sides of abdomen broadly exposed above; disk 

 feebly flattened ; the junction of the discal flattened portion with the 

 convex sides of the elytra has the appearance of an obtuse costa, 

 the sutural margins elevated near apex, and with broad, deep basal 

 depressions; surface finely, densely imbricate-punctate, sparsely 

 clothed with fine, inconspicuous hairs, and each elytron ornamented 

 with three distinct spots of densely placed, recumbent, golden yellow 



