208 BULLETIN 14 5, UNITED STATES NATIONAL MUSEUM 



apical angles to near base, where they are slightly sinuate; when 

 viewed from the side the marginal and submarginal carinae are 

 slightly sinuate, rather narrowly separated anteriorly, and connected 

 to each other behind the middle; anterior margin strongly sinuate, 

 Avith the median lobe strongly, broadly rounded; base feebly, trans- 

 versely sinuate to the median lobe, which is feebly emarginate in 

 front of the scutellum ; disk moderately convex, the median line with 

 a feeble, broad, anterior and posterior depression, with a broad, deep, 

 oblique depression on each side along lateral margin extending nearly 

 to median line, and with sharply defined, long, straight, prehumeral 

 carinae; surface strongly, not closely, transversely rugose, sparsely, 

 finely punctate between the rugae, and clothed with a median band 

 of sparsely placed, long, recumbent, yellowish pubescence, which is 

 often denuded, and a broad band of similar pubescence extending 

 along lateral margins from apical angles to posterior angles. Scutel- 

 lum strongly, transversely carinate, and the surface finely, densely 

 reticulate. 



Elytra slightly wider than pronotum at base and slightly wider 

 at base than behind middle ; sides nearly parallel for a short distance 

 behind base, vaguely, arcuately constricted in front of middle, feebly 

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

 which are separately, broadly rounded, and strongly serrulate ; sides 

 of abdomen scarcely exposed above ; disk more or less longitudinally 

 depressed, with a vague indication of longitudinal costa, sutural mar- 

 gins slightly elevated posteriorly, and with broad, deep basal depres- 

 sions; surface densely, coarsely granulose, and sparsely, uniformly 

 clothed with short, inconspicuous hairs. 



Abdomen beneath obsoletely reticulate, finely punctate, the punc- 

 tures more or less connected transversely by sinuate lines, sparsely 

 placed on median part, denser at the sides, becoming coarsely scabrous 

 on the two basal segments, and sparsely clothed with short, incon- 

 spicuous hairs ; first segment feebly, longitudinally concave at middle ; 

 last segment broadly rounded at apex; vertical portions of the seg- 

 ments densely clothed with long, recumbent, yellowish pubescence; 

 pygidium sparsely, coarsely punctate, strongly carinate, but the 

 carina not projecting. Presternum finely, densely punctate or granu- 

 lose, and sparsely clothed with long, erect, fine hairs ; prosternal lobe 

 broad, moderately declivous, and broadly, rather deeply, arcuately 

 emarginate in front; prosternal process broad, the sides nearly paral- 

 lel to behind the coxal cavities, then abruptly narrowed to the apex, 

 which is acute. Posterior coxae with the posterior margin feebly, 

 transversely sinuate, and the exterior angle rectangular. Tibiae 

 slender, and the anterior and middle pairs armed with a distinct 

 tooth on inner margin at apex. Posterior tarsi as long as the tibiae, 

 and the first joint as long as the following joints united. Tarsal 



