46 BULLETIN 6.3, UNITED STATES NATIONAL MUSEUM. 



and moderately convex, more or less arciiately declivous laterally and 

 at the apical angles, finely and sparsely piinctulate, punctures slightly 

 denser and coarser along the margins laterally; ((pex slightly emargi- 

 nate or truncate, finely or more or less obsoletely n:argined; -s^f7e■s 

 evenly and more or less moderately arcuate from base to apex, or 

 more strongly arcuate in the anterior two-thirds, and thence to base 

 oblique and convergent, or very feebly arcuate, sometimes obsoletely 

 sinuate, finely beaded ; base feebh' arcuate, finely to more or less 

 obsoletely margined, and one-fifth to one-fourth wider than the apex; 

 apical angles distinct, scarcely at all rounded ; basal angles obtuse. 



Propleurae finely and very sparsely submuricately punctate and 

 more or less distinctly rugulose. 



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

 base slightly emarginate, more or less feebly sinuate laterally, a little 

 Avider than or equal to the contiguous base of the prothorax; himieri 

 subacute or feebly obtuse; sides evenly arcuate, apex obtuse; disc 

 moderately convex on the dorsum, at times slightly depressed, later- 

 ally quite strongly and evenly rounded, evenly and arcuately decli- 

 vous posteriorly, serially punctate, strial punctures usually rather 

 large and somewhat deeply impressed, at times rather small and not 

 impressed, the individual punctures are usually more distant from 

 each other than their own diameters; intervals flat, frequently feebly 

 convex, with a single series of very small, distantly and irregularly 

 spaced punctures; laterally the interstitial punctures become larger, 

 and both series more or less irregular and somewhat confused. 



E piplenrw gradually narrowing from base to apex, superior margin 

 feebly sinuate beneath the humeri ; surface finely to obsoletely or dis- 

 tinctly and sparsely punctate. 



Sterna shining to subopaque, finely and rather densely punctate, 

 at times rugulose. 



Parapleurm rather coarsely and ((uite densely punctate. 



Ahdovien more or less glabrous, finely and sparsely jiunctulate, 

 first segment more strongly sculptured ; surface obsoletely to dis- 

 tinctly rugulose. 



Legs moderate. Anterior femora mutic in (he sexes; anterior 

 tibial spurs and tarsi slightly dissimilar in the sexes. 



Male. — Body comparatively slender. Elytra rather gradually 

 narrowed and evenly arcuato-obliquely declivous posteriorly. Ab- 

 domen slightly oblique, very moderately convex, first two segments 

 more or less impressed at the middle. Anterior spurs of the anterior 

 tibiae slightly the stouter, almost twice as long as the posterior and 

 gradually narrowing from base to apex, both comparatively slender 

 and acute. Tarsi distinctly longer than in the female, the anterior 

 with first joint bearing a minute pencil of brownish modified spinules, 

 surrounded by ordinary piceous spinules on the thickened tip beneath. 



