4 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 76 



transverse between the antennae, and the anterior margin semi- 

 circularly emarginate at middle and truncate on each side of the 

 emargination ; antennae broken, serrate from the fourth joint, and 

 the outer joints about as wide as long; eyes large, broadly oblong, 

 and about equally rounded above and beneath. 



Pronotum nearly one-half wider than long, slightly narrower at 

 base than apex, and widest along apical half; sides nearly parallel 

 from apical angles to middle, then slightly narrowed to near the 

 posterior angles, which are rectangular; when viewed from the side 

 the marginal and submarginal carinae are strongly sinuate, widely 

 separated anteriorly, and connected to each other behind the middle } 

 anterior margin slightly sinuate, and the median lobe feebly, broadly 

 rounded; base angularly emarginate at middle of each elytron, the 

 median lobe strongly produced, broadly rounded, and subtruncate 

 in front of scutellum ; disk with two large, feeble depressions placed 

 longitudinally at middle, a broad, deep depression on each side along 

 lateral margin, and with rather strongly elevated, arcuate prehumeral 

 carinae extending from posterior angles to marginal carinae at 

 middle; surface densely, coarsely, transversely rugose at middle, the 

 rugae becoming more oblique toward the sides, and sparsely, finely 

 punctate between the rugae. Scutellum strongly, transversely cari- 

 nate, and the surface finely reticulate. 



Elytra about as wide as pronotum at base, and distinctly wider at 

 base than behind the middle; sides nearly parallel for a short dis- 

 tance behind base, feebly narrowed to behind middle (vaguely con- 

 stricted in front of middle), then more strongly, obliquely narrowed 

 to near the tips, which are vaguely expanded, broadly subtruncate, 

 and armed with three coarse teeth on each tip, of which the middle 

 tooth is the longest; disk broadly, moderately deeply depressed along 

 sutural margins, causing a more or less distinct longitudinal costa 

 at middle of each elytron, sutural margins slightly elevated toward 

 apex, and with broad, deep basal depressions ; surface finely, densely 

 imbricate-punctate, sparsely clothed with short inconspicuous hairs, 

 and each elytron ornamented with white pubescent designs as fol- 

 lows : A small spot in basal depression, an elongate ring in sutural 

 depression in front of middle, a similar ring in same depression 

 behind middle, an elongate spot near apex, and a similar spot along 

 lateral margin behind middle. 



Abdomen beneath rather densely, finely punctate, the punctures 

 more or less connected transversely by vague sinuate lines, especially 

 on basal segment, very sparsely clothed with short, inconspicuous 

 hairs, and with a spot of more distinct hairs at the sides of the third 

 and fourth segments ; sides very broadly and abruptly exposed above ; 



