176 BULLETIN 63, UNITED STATES NATIONAL MUSEUM. 



Head scarcely twice as wide as long, slightly convex, very feebly 

 and quite regularly punctulate. Antennae moderate, scarcely reach- 

 ing beyond the prothoracic base, outer four joints very slightly com- 

 pressed and dilated, third joint about equal to the next two taken 

 together, fourth to the eighth, inclusive, subequal, eighth subtri- 

 angular, ninth and tenth suborbicular, eleventh short oval. 



Pronotiim widest toward the base, where it is at least one-half 

 wider than the apex, and about twice as wide as the head ; disc evenly 

 and moderately convex, rather densely and very finely punctulate; 

 apex emarginate and more or less obsoletely margined ; sides feebly 

 arcuate and converging from base to apex, ver}^ finely beaded ; base 

 broadly arcuate, frequently very feebly sinuate at middle, finely 

 margined ; apical angles acute, rather prominent anteriorly, never 

 everted; basal angles broadly and rather obtusely rounded. 



Propleuro' obsoletely punctulate. 



Elytra pointed oval to ovate, scarcely twice as long as wide; hase 

 deeply emarginate, humeral angles acute and anteriorly prominent 

 clasping the obtuse basal angles of the prothorax; sides acutely 

 margined, evenly arcuate and continuing the lines of the sides of the 

 pronotum, apex obtusely rounded ; disc flattened and more or less 

 feebly convex, sides acutely inflexed and not suddenly arcuately de- 

 clivous posteriorly; surface finely, irregularly, and inconspicuously 

 punctulate and estriate, rarely striate : inflexed sides with surface 

 quite plane, feebly concave at the humeri, and sculptured as on the 

 dorsum. 



Epifleura' smooth and narrow, very gradually narrowing from 

 base to apex ; surface obsoletely punctulate. 



Sterna very finely muricately punctured, and more or less obsoletely 

 rugulose. 



Parapleural finely punctate. 



Ahdonien more or less shining and smooth, finely and quite regu- 

 larly punctate, and more or less rugulose. 



Legs moderate. Femora nuitic in l)()th sexes; anterior tibial spurs 

 unequal, the anterior longer and slightlv larger than the posterior. 

 Tarsi dissimilar in the sexes. 



Male. — Moderately narrow and fusiform. Abdomen moderately 

 convex and more or less impressed on the first segment betAveen the 

 coxa>; slightly oblique to the intercoxal process and sterna. First 

 tAvo joints of the anterior tarsi slightly widened and clothed beneath 

 with dense pads of more or less sjiongy pubescence, surface of the 

 pads quite flat. 



Female. — More oi' less broadly fusiform oval. Abdomen more or 

 less strongly convex; anterior tarsi unmodified. 



Measurements. — Males: Length, 10.5-12 nun.; width, -I-.8-5 mm. 

 Females: Length, 10.5-14 mm.; width, 5.5-7 mm. 



