92 BULLETIN 63, UNITED STATES NATIONAL MUSEUM. 



Propleura' sparsely i)uiu'tate and more or less strongly rugulose. 



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

 base truncate to feebly emarginate, sometimes sinuate laterally, equal 

 to or slighth' Avider than the contiguous prothoracic base; humeri 

 obtuse, at times more or less rounded, again slightly prominent; sides 

 evenly arcuate, somewhat pointed at the apex, the latter not broadly 

 rounded ; disc more or less moderately convex on the dorsum, quite 

 strongly and evenly rounded laterally, arcuately declivous posteriorly ; 

 inflexed sides somewhat oblique ; very coarsely, deeply, and densely 

 punctate, punctures irregularly distributed without trace of a 

 serial arrangement, not muricate, but producing a strongly rugu- 

 lose appearance by nuitual semi-coalescence. 



Epipleui'<v moderate in width and gradually narrowing from base 

 to apex, superior margin very broadly and feebly sinuate beneath 

 the humeri; surface sparsely punctate. 



Sterna somewhat shining, densely })unctate and more or less 

 rugose. 



Parapleural coarsely and densely punctate. 



Abdomen glabrous, sparsely punctate, punctures coarser and denser 

 on the fifth segment ; surface more or less rugulose. 



Legs short and rather robust. Anterior femora mutic ; anterior 

 tibial spurs dissimilar in the sexes; first joint of the anterior tarsi 

 thickened at tip beneath, feebly dissimilar in the sexes. 



Male. — More or less slender. Antenna^ I'eaching to the base of the 

 prothorax. Elytra arcuately and more or less obliquely declivous 

 behind and gradually narrowed in the posterior fourth. Abdomen 

 more or less distinctly oblique, moderately convex, broadly im- 

 pressed on first segment, less so on the second. Anterior spurs of 

 the anterior tibiae slender, acute, and about a third longer than the 

 posterior-. First joint of the anterior tarsi with the tuft of spinules 

 obsolete at tip beneath, groove slight and not interrupted on the 

 thickened tip. 



Female. — Ovate, robust, antenna^ not quite reaching to the pro- 

 thoracic base. Elytra broadly oval, arcuately and more or less ver- 

 tically declivous and less strongly narrowed behind. Abdomen hori- 

 zontal and more or less strongly convex. Anterior spurs of the 

 anterior tibiie moderately broadened, sides more or less parallel, 

 narrowing in apical fourth, rather acute or blunt if worn. First 

 joint of the anterior tarsi distinctly thickened at tip beneath, tuft of 

 spinules not evident. 



Meastirements. — Males: Length, 14-17.5 nnn.; width, 5.5-6.8 mm. 

 Females: Length, 15-18.8 mm.; width, 7-0,2 nnn. 



Genital characters.^ male. — Edeagophore elongate and acutely 

 ovate, and rather strongly arched. 



