40 BULLETIN L45, UNITED STATES NATIONAL MUSEUM 



the middle; surface coarsely punctate, slightly rugose, finely granu- 

 lose, and densely clothed with long, recumbent, yellow pubescence 

 behind the epistoma, the pubescence becoming sparser toward the 

 top: epistoma wide, transverse between the antennae, with a semi- 

 circular emargination in front, and the anterior margin feebly 

 rounded on each side of the emargination; antennae extending 

 slightly beyond middle of pronotum, serrate from the fourth joint, 

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

 elongate, and slightly more acutely rounded above than beneath. 



Pronotum one-third wider than long, slightly narrower at base 

 than apex, and widest near middle; sides feebly, arcuately rounded, 

 slightly more oblique posteriorly; when viewed from the side the 

 marginal carina is feebly sinuate, the submarginal carina straight. 

 the two carinae rather widely separated anteriorly, and connected 

 to each other near the base; anterior margin strongly sinuate, with 

 the median lobe broadly rounded; base deeply emarginate at middle 

 of each elytron, the median lobe very wide, and subtruncate in front 

 of scutellum; disk feebly convex, with a rather shallow, oblique 

 depression on each side along lateral margin, an obsolete depression 

 in front of scutellum, and with arcuate, obtusely rounded, pre- 

 humeral carinae, which are connected to the marginal carina near 

 the middle; surface densely, transversely rugose, finely, sparsely 

 punctate between the rugae, and sparsely clothed with recumbent, 

 yellowish hairs in the lateral depressions, Scutellum strongly, 

 transversely carinate, and the surface densely, finely reticulate. 



Elytra slightly wider than pronotum at base, slightly wider at 

 base than just behind the middle; sides nearly parallel, feebly, 

 broadly arcuately constricted in front of middle, and obliquely at- 

 tenuate posteriorly to the tips, which are separately, broadly rounded, 

 and strongly serrulate; sides of abdomen broadly exposed above for 

 nearly their entire length; disk somewhat flattened, each elytron 

 with two feeble, longitudinal costae. and a rather deep, oblong basal 

 depression; surface coarsely punctate, the punctures shallow, irregu- 

 larly distributed, becoming rather strongly imbricate toward the 

 apex, and clothed with a few inconspicuous hairs. 



Abdomen beneath finely, densely punctate, and sparsely clothed 

 with whitish hairs on the median parts, coarsely imbricate or rugose 

 at sides of first segment, the other segments with a dense ty punctured 

 spot, densely clothed with recumbent yellowish pubescence on each 

 side near the anterior margin, and the lateral margin sometimes ob- 

 literated on the first two segments; first segment convex, not de- 

 pressed or densely pubescent at middle; vertical portions of the seg- 

 ments each with a densely clothed, yellow pubescent spot in front ; 

 pygidium coarsely punctate, with a sharply elevated, median carina. 



