110 BULLETIN" 14 5, UNITED STATES NATIONAL MUSEUM 



Head with the front rather wide, distinctly wider at top than at 

 bottom, vertex and occiput broadly concave, the concavity extending 

 on the vertex to the lateral margins, which are feebly, arcuately ex- 

 panded at middle, and with a narrow, longitudinal groove extending 

 from the occiput to epistoma ; surface densely rugose, finely granu- 

 lose, densely, coarsely punctate, and rather densely clothed with 

 long, recumbent, yellowish hairs over entire surface; epistoma rather 

 wide between the antennae, and 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, strongly 

 elongate, and about equalty rounded above and beneath. 



Pronotum one-half wider than long, base slightly wider than 

 apex, and widest at middle ; sides moderately, arcuately rounded ; 

 when viewed from the side the marginal carina is strongly sinuate, 

 the submarginal carina feebly sinuate, the two carinae rather widely 

 separated anteriorly, and connected to each other near the base; 

 anterior margin slightly sinuate, with a broadly rounded median 

 lobe ; base strongly emarginate at middle of each elytron, the median 

 lobe broadly rounded, and subtruncate or feebly emarginate in front 

 of scutellum; disk moderately convex, with a broad, shallow median 

 depression extending from base nearly to apex, a broad, shallow de- 

 pression on each side along lateral margin, and without prehumeral 

 carinae; surface closely, coarsely, transversely rugose, finely, rather 

 densely punctate between the rugae and in the depressions, with a 

 median band of yellowish pubescence extending from base to near 

 the anterior margin, and a broader band of similar pubescence along 

 lateral margins. Scutellum feebly, transversely carinate, and the sur- 

 face finely reticulate. 



Elytra slightly wider than pronotum at base, about equal in width 

 at base and apical third, deeply, broadly, arcuately constricted near 

 middle, and arcuately attenuate from apical third to the tips, which 

 are separately, broadly rounded, and rather coarsely serrulate; sides 

 of abdomen broadly exposed above; disk slightly flattened, with 

 feebly indicated longitudinal costae. and broad, deep basal depres- 

 sions; surface finely, densely imbricate-punctate, and not pubescent. 



Abdomen beneath finely, densely punctate, obsolctely granulose, 

 more coarsely punctate and rugose on the first two segments, and 

 rather densely clothed with short, recumbent, whitish hairs; vertical 

 portions of the segments densely clothed with recumbent, golden 

 yellow pubescence; first segment slightly, broadly flattened at mid- 

 dle, the second with a deep, smooth groove, which is wider in front, 

 and extending three-fourths to the posterior margin of the segment ; 

 last segment obtuse or subtruncate at apex ; pygidium coarsely punc- 

 tate, strongly carinate, the carina projecting and truncate at apex. 

 Prosternum coarsely, densely punctate, coarsely rugose, and sparsely 



