260 BULLETIN 63, UNITED STATES NATIONAL MUSEUM, 



series, the punctures sometimes rather coarse, at other times fine and 

 quite closely placed in the series, intervals flat, with a single more 

 or less regular series of widely spaced and very fine punctures; the 

 punctuation becomes more or less irregular on the sides and apex. 



Ejyipleurce moderate in width at the humeri, thence gradually nar- 

 rowing to the apex ; surface smooth, finely and very sparsely punc- 

 tulate, or impunctate, frequently finely rugulose and feebly concave. 



Sterna more or less punctate. 



Parapleural rather coarsely and evenly punctate. 



Abdomen horizontal, sparsely, finely, and quite evenly punctured, 

 punctures slightly denser on the fifth segment. 



Legs moderately long; all of the femora coarsely and quite densely 

 punctate, and each armed with a long, acute, and strongly devel- 

 oped tooth ; all of the tibial generally more or less arcuate in basal 

 half; anterior tibial spurs equal and acute; tarsi simple and similar 

 in the sexes. 



Male. — Elongate, slightly narrower than the female. Antenna:^ 

 reaching about to the posterior fifth of the prothorax. Elytra some- 

 limes distinctly narrowed posteriorly and more or less obliquely de- 

 clivous; apex obtuse, not produced, and rather narrowly rounded. 

 Abdomen moderately convex, and broadh^, very feebly impressed on 

 the first two or three segments. 



Female. — More or less robust. Antennae scarcely attaining the 

 posterior fifth of the prothorax. Elytra more or less evenly arcu- 

 ately declivous posteriorly ; apex rather broadly rounded. Abdomen 

 strongly convex and not impressed. 



Measurements. — Males: Length, 25-28.5 mm.; width, 8-9 mm. 

 Females: Length, 24-32 mm.; width, 8-11.5 mm. 



Genital eharacters^ male. — Edeagophore of the usmil flattened 

 oblong-ovate form and but slightly arched. 



Basale about a third of its length longer than the apicale, evenly 

 convex above, with the sides evenly arcuate. 



A'pirale very slightly elongate, triangular, evenly convex al)ove. 

 with a narrow, membranous median groove in apical half; sides 

 slightly arcuate or straight, apex subacute, not produced and nar- 

 rowly rounded ; base broadly and evenly rounded at middle, feebly 

 sinuate laterally. 



Sternite with sides converging apicad. Each lobe rather small : 

 external border straight in basal half and arcuate apically, with the 

 apex broadly and evenly rounded ; internal margin slightly arcuate ; 

 surface rather densely punctate and set with quite long and densely 

 placed setse, especially at apex and apical border. Membrane not 

 setose at bottom of the sinus, the latter rather bi-oad. 



Female. — Genital segment trapezoidal, moderate in size, usually 

 not strongly setose. 



