S6^ BULLETIN 63, UNITED STATES NATIONAL MUSEUM. 



very feebly inuricate laterally and on apex ; sometimes the punctures 

 are subequal and diffuse. 



Epipleurce moderately wide at the humeri and thence gradually 

 narrowing to apex; surface very finely and obsoletely punctate. 



Sterna more or less densely punctate and rugulose. 



Parapleural rather coarsely punctate. 



Abdomen horizontal, rather finely and evenly punctate, rugulose, 

 the punctuation denser on the fifth segment. 



Legs variable in length, form and stoutness. Anterior femoi-a 

 armed in both sexes; tibial spurs similar in the sexes, the anterior 

 equal and acute ; tarsi similar in the sexes. 



Male. — Elongate, subfusiform oval, and somewhat narrow. An- 

 tennae usually scarcely reaching to or slightl}'^ bej^ond the protho- 

 racic base. Elytra gradually narrowed, and evenly, not rapidly 

 arcuately declivous posteriorly; apex narrowly rounded and obtuse. 

 Abdomen moderately convex, first two segments scarcely im- 

 pressed. Anterior femora with a moderate and acute tooth at about 

 outer third ; posterior tibia? straight or arcuate. 



Female. — Rather robust. Antenna? usually attaining the posterior 

 third or about to the base of the prothorax. Elytra more or less 

 broadly oval, rather suddenly arcuately declivous posteriorly, with 

 apex rather broadly rounded. Abdomen quite strongly convex and 

 not at all impressed. Anterior femora armed with a more or less 

 obtuse tooth ; posterior tibiae not arcuate. 



Genital characters., male. — Edeagophore of the usual flattened 

 oblong-ovate form and rather small. 



Basale quite short and oblong, scared}" arched, but gradually gib- 

 bous dorsally toward base. 



Apicale triangular; surface evenly convex, rather slightly de- 

 pressed and with a feeble membranous groove in middle two-fourths ; 

 sides slightly arcuate and apex simply acute; base more or less ar- 

 cuately lobed at middle and broadly sinuate laterally. 



Sternitc slightly transverse. Each lobe with the external border 

 evenly and broadly arcuate in apical half and quite parallel toward 

 base; internal border straight; apex narrowly rounded; surface 

 densely and strongly punctate in apical moiety. Seta; rather long 

 and dense. Membrane not setose across the bottom of the sinus, the 

 latter moderately narrow. 



Female. — Genital segment subtrapezoidal, rather robust, apex 

 more or less chitinous and setose. 



Valvula (Plate. 3, figs. 9 and 11). — Dorsal plate oblong, glabrous; 

 surface moderately concave, very sparsely punctate, seta; rather 

 short; sides feebly reflexed; margins quite parallel, the external 

 straight to feebly sinuate; internal border slightly arcuate; apical 



