42 BULLETIN 63, UNITED STATES NATIONAL MUSEUM. 



contiguous base of the prothorax; humeri more or lass acute; sides 

 evenly arcuate, apex obtusely and narrowly rounded; disc evenly 

 and moderately convex, laterally more strongly rounded, evenly and 

 quite strongly arcuately declivous posteriorly, punctate, punctures 

 slightly separated, moderate sized and arranged in rather distant 

 series; intervals flat with a single series of irregularW spaced and 

 usually fine punctures, both series becoming more or less confused 

 at the sides and apex. 



Epipleurce moderate in width, superior margin feebly sinuate be- 

 neath the humeri, very gradually narrowing to apex; surface gla- 

 brous and more or less finely and sparsely punctulate. 



Sterna more or less glabrous, irregularly and more or less densely 

 punctate, rugulose. 



Parapleiirm rather coarsely and somewhat densely punctate. 



Abdomen shining and glabrous, si)arsely, and finely punctulate, 

 more or less rugulose. 



Legs moderate. Anterior femora mutic in the sexes; anterior tibial 

 spurs slightly dissimilar; first joint of the anterior tarsi produced at 

 tip beneath and feebly dissimilar in the sexes. 



Male. — Slightly robust. Thorax quite quadrate; abdomen sub- 

 horizontal, first two segments more or less broadly impressed at 

 middle, intercoxal process slightly concave; anterior tibial spurs 

 comparatively small and slender, the anterior one scarcely widened. 

 First joint of the anterior tarsi with a minute pencil of brownish 

 modified spinules surrounded l)v dark spinules on produced tip be- 

 neath. 



Female. — Moderately robust. Thorax slightly transverse. Abdo- 

 men horizontal and rather strongly convex. Anterior tibial spurs a 

 little lai'ger and longer, the anterior spur slightly widened but grad- 

 ually narrowed from base to apex. First joint of the anterior tarsi 

 with dark spinules on the produced tip beneath. 



Measurements. — Males: Length, 12-13 mm.; widtli, 5.5 mm. Fe- 

 males: Length, 12.8-14.8 nnn.; width, r)-().5 nun. 



Genital characters., Tnale. — Edeagophore elongate oval, acutely 

 pointed at the apical extremity and slightly arched. 



Basale oblong, evenly convex, sides slightly arcuate. 



Apicale trianguhir, rather evenly convex above, with a narrow 

 median membranous groove at the middle third ; sides feebly arcuate 

 at base, thence broadly and more or less strongly sinuate to apex, the 

 latter appearing attenuated ; base strongly and moderately narrowly 

 arcuate at middle, laterally broadly sinuate. 



Sternite rather short and transversely parabolic. Each lobe with 

 the external border evenly arcuate to apex, the latter narrowly 

 rounded; internal border oblique; surface feebly convex, shining. 



