446 BULLETIN 63, UNITED STATES NATIONAL MUSEUM. 



scarcely compressed or incrassate, third joint slightly shorter than the 

 next two taken together, fourth slightly longer than the fifth, the 

 latter, sixth, and seventh snbequal, eighth just a trifle shorter, ninth 

 and tenth suborbicular, eleventh short-ovate. 



Pronotmn cordately and transversely oval, widest in front of the 

 middle, where it is scarcely one-half wider than long ; disc moderately 

 and quite evenly convex, finely and rather sparsely punctate, narrowly 

 impressed along the sides and feebly granulate; apex rather deeply 

 and evenly emarginate, more or less obsoletely margined, and one- 

 eighth wider than the base; sides evenly and strongly arcuate in 

 anterior three-fourths, thence to base obliquely and more or less 

 sinuate, margin feebly but distinctly reflexed to near the hase^ the 

 latter quite truncate and one-sixth to one-fourth shorter than the 

 length; apical angles quite acute, not rounded, and slightly promi- 

 nent; basal angles quite rectangular, not prominent nor rounded. 



Propleurce smooth and impunctate or sparsely and feebly muricato- 

 punctate and rugiilose. 



Elytra oval, widest at the middle, less than twice as long as wide ; 

 base not emarginate, usually slightly wider than the contiguous pro- 

 thoracic base ; humeri rounded ; sides evenly arcuate, apex feebly 

 produced and narrowly rounded ; disc quite flat, sometimes very feebly 

 convex on the dorsum, laterally rather narrowly rounded and quite 

 suddenly inflexed, especially near the humeri, inflexed sides quite 

 plane and oblique, evenly and more or less gradually arcuately 

 declivous posteriorly, feebly sinuate at apex; si/rface finely and 

 scarcely denselj^ muricately punctate on the sides and apex, some- 

 times quite densely so, punctures quite simple on dorsum along the 

 suture. 



Epipleura' smooth, obsoletely and very sparsely punctate; moderate 

 in width beneath the humeri, thence gradually narrowing to apex. 



Sterna sometimes smooth, obsoletely pimctate and rugose, at other 

 times more coarsely sculptured. 



Parapleural more or less indistinctly })unctate. 



Abdomen smooth, more or less dull in luster, very minutely, 

 spars(>ly and more or less indistinctl}^ punctate, more or less rugulose 

 and horizontal. 



Legs moderate in length and stoutness, rather densely sculptured. 

 Profemora more or less sinuate in outer fifth. Protibia^ quite dis- 

 tinctly and rather suddenly constricted at base, the constriction 

 opposed to the femoral sinuation ; spurs similar in the sexes, slender 

 and acute, the anterior slightly longer than the posterior. Protarsi 

 nearly similar in the sexes. 



Male. — Body somewhat narrow. Elytra rather obliquely to gradu- 

 ally declivous posteriorly. Abdomen very moderately convex and 

 very feebly flattened at middle of the first two segments. Protarsi 



