\Q PROCEEDINGS OF THE NATIONAL MUSEUM vol. 76 



surface is very sparsely, coarsely, and irregularly punctate, and 

 clothed with whitish pubescence behind the epistoma and antennal 

 cavities; epistoma not transverse between the antennae, but deeply 

 arcuately emarginate in front; antennae extending nearly to middle 

 of pronotum, serrate from the fourth joint, and the outer joints about 

 as wide as long; eyes large, broadly oblong, and equally rounded 

 above and beneath. 



Pronotum nearly one-half wider than long, about equal in width 

 at base and apex, and widest at middle; sides slightly arcuately 

 rounded from apical angles to posterior angles, which are rectangu- 

 lar; when viewed from the side the marginal and submarginal 

 carinae are feebly sinuate, rather narrowly separated anteriorly, 

 and connected to each other behind the middle; anterior margin 

 feebly sinuate and without a distinct median lobe ; base feebly emar- 

 ginate at middle of each elytron, the median lobe broadly rounded, 

 and subtruncate in front of scutellum; disk with two large, vague 

 depressions placed longitudinally at middle, a broad, deep depres- 

 sion on each side along lateral margin, and with strongly elevated, 

 arcuate prehumeral carinae extending from posterior angles to mar- 

 ginal carinae at middle ; surface coarsely but not deeply transversely 

 rugose at middle, becoming irregularly rugose toward the sides, finely 

 punctate between the rugae, and sparsely clothed with very short 

 whitish hairs in the lateral depressions. Scutellum strongly, trans- 

 versely carinate, and the surface smooth. 



Elytra slightly wider than pronotum at base and distinctly wider 

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

 behind base, feebly narrowed to behind middle (vaguely constricted 

 in front of middle), then more strongly, obliquely narrowed to near 

 the tips, which are slightly expanded, broadly subtruncate, and 

 coarsely, irregularly dentate; disk broadly, deeply depressed along 

 sutural margins, causing a broadly rounded longitudinal costa at 

 middle of each elytron, sutural margins distinctly elevated poste- 

 riorly, and with broad, deep basal depressions; surface vaguely 

 rugose, sparsely, finely punctate, sparsely clothed with short incon- 

 spicuous black hairs, and each elytron ornamented with whitish 

 pubescent spots as follows : Four elongate spots placed in the sutural 

 depression, one at base, one in front of middle, one behind middle, 

 and one near apex, and an additional elongate spot along lateral 

 margin behind middle. 



Abdomen beneath finely, sparsely punctate, the punctures more or 

 less connected transversely by vague sinuate lines on basal segment, 

 sparsely clothed with short inconspicuous hairs, and with a large 

 spot of white pubescence at sides of third segment; sides very 

 broadly, abruptly exposed above; first segment convex and without 

 long pubescence at middle; last segment broadly rounded at apex; 



