128 BULLETIN 63, UNITED STATES NATIONAL MUSi:UM. 



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

 base truncate, equal to or slightly wider than the contiguous protho- 

 racic base; hwrneri obtuse, not rounded, slightly prominent ante- 

 riorly ; sides evenly arcuate, apex subacute ; disc moderately convex, 

 sometimes more or less deplanate, more or less broadly rounded 

 laterally, inflexed sides frequently rather plane, arcuately declivous 

 posteriorly; tuberculate, tubercles sometimes flattened, frequently 

 evenly rounded and moderately elevated, arranged in rows, alternate 

 series at times slightly larger, with intervening scattered, acute, 

 elevated punctures, interspaces more or less opaque, frequently the 

 punctures along the suture are coarsely sul)muricate, sculpturing 

 more confused at the sides. 



K piplew'fp narrow, scarcely dilated beneath the humeri, and grad- 

 ually narrowing to apex, superior margin broadly upcurving in 

 basal fifth, not visible from above; surface more or less glabrous, 

 finely punctate. 



Sterna scabrous, densely punctate and rugose. 



Parapleurcp quite densely punctate. 



Abdomen sparsely punctulate and more or less densely rugulose. 



Legs usually moderate in length; anterior femora dentate or sin- 

 uate; anterior tibial spurs quite similar in the sexes, the anterior a 

 little longer and larger than the posterior, both slender and acute ; 

 anterior tarsi feebly dissimilar in the sexes. 



Male. — P^longate ovate, somewhat narrow, antenna^ reaching a 

 little beyond the base of the prothorax. Elytra rather gradually 

 and arcuately declivous posteriorly, and somewhat attenuate in apical 

 third. Abdomen feebly oblique, moderately convex, broadly and 

 slightly or scarcely impressed at middle of the first segment. Ante- 

 rior femora with an obtuse tooth at junction of the middle and outer 

 third, or more or less feebly sinuate in apical fourth : anterior tarsi 

 wdth the first joint scarcely thickened at tip beneath, groove entire, 

 apico-marginal tuft of spinules rather stout, and distant. 



Female. — Ovate, rather robust. Antennae reaching about to the 

 base of the prothorax. Elytra rather broadly oval, arcuately and at 

 times vertically declivous prosteriorly. Abdomen rather strongly 

 convex and horizontal. Anterior femora feebly or not sinuate in 

 outer fourth ; first point of the anterior tarsi feebly thickened at ti]) 

 beneath, groove entire although shallow, apico-marginal tufts of spin- 

 ules somewhat approximate. 



Measurements. — Males: Length, 14.2-17.2 mm.: width, 5.5-6.5 nnn. 

 FemaUs: Length, 16-17.5 mm.; width, 7.2-7 mm. 



Genital characters., Male. — Edeagophore rather elongate, pointed 

 oval, not arched. 



Basale oblong, moderately convex, sides parallel. 



