172 BULLETIN" 14 5, UNITED STATES NATIONAL MUSEUM 



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

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

 the fourth joint, and the outer joints wider than long; eyes mod- 

 erately large, rather broadly oblong, and about equally rounded 

 beneath and above. 



Pronotum one-third wider than long, wider at base than apex, and 

 widest at apical third; sides feebly, obliquely expanded from base 

 to apical third, then arcuately narrowed to the apical angles; when 

 viewed from the side the marginal carina is feebly sinuate, the sub- 

 marginal carina obsolete anteriorly, narrowly separated from the 

 marginal carina, and connected to it at the base; anterior margin 

 strongly emarginate, with the median lobe feebly, broadly rounded ; 

 base transversely truncate to middle of each elytron, then extending 

 obliquely backward to the scutellum, in front of which it is broadly 

 subtruncate ; disk moderately convex, with a deep median depression, 

 wider behind than in front, and extending from base to apex, a 

 rather shallow, broad depression on each side along lateral margin 

 at middle, a round, deep, pitlike puncture on each side along base 

 near posterior angles, and without prehumeral carinae; surface 

 densely, transversely rugose, densely, coarsely punctate between the 

 rugae, the punctures becoming much finer at the sides, where the 

 surface is densely clothed Avith recumbent, yellowish pubescence. 

 Scutellum not transversely carinate, but the surface, finely, obsoletely 

 reticulate. 



Elytra slightly wider than pronotum at base, and slightly wider 

 at base than just behind the middle; sides feebly, arcuately rounded 

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

 in front of middle, broadly expanded behind the middle, then arcu- 

 ately narrowed to the tips, which are separately, rather broadly 

 rounded, and minutely serrulate; sides of abdomen broadly exposed 

 above; disk feebly flattened, vaguely, longitudinally depressed on 

 each side of the suture, which is elevated posteriorly, and with broad, 

 shallow basal depressions ; surface densely, finely imbricate-punctate, 

 the punctures becoming finer and more confluent toward the apex, 

 and without distinct pubescence. 



Abdomen beneath finely, densely punctate, transversely rugose 

 on basal segment, sparsely clothed with very short, indistinct hairs, 

 with a few long yellow hairs at apex ; first segment convex at middle, 

 without a median groove; last segment broadly rounded or sub- 

 truncate at apex, with a deep, marginal groove, which is not inter- 

 rupted at apex; vertical portions of segments densely clothed with 

 long, recumbent, yellowish pubescence; pygiclium not carinate. 

 Prosternum coarsely, confluently punctate, and without distinct 

 pubescence; prosternal lobe broad, strongly declivous, with a deep, 

 transverse groove behind, and rather deeply, arcuately emarginate 



