404 BULLETIN 63, UNITED STATES NATIONAL MUSEUM. 



Abdomen finely punctate and rugulose. each puncture with a rather 

 long, erect ferruginous hair; fourth and fifth segments frequently 

 more or less rufous ; horizontal. 



Legs slender and somewhat long. Femora finely and not very 

 densely punctate, each puncture with a rather short reclinate seta ; 

 profemora feebly sinuate in both sexes. Anterior tibial spurs sub- 

 equal and acute. Tarsi similar in the sexes; setae and s]:)inules ferru- 

 ginous throughout. 



Male. — Elongate, cylindrically ■ subfusiform. Prothorax rather 

 strongly convex. Elytra with sides not strongly arcuate, sometimes 

 subparallel at middle, obliquely narrowed in apical fourth, arcuately, 

 more or less obliquely and rather gradually declivous behind. 

 Abdomen moderately convex and very feebly impressed along the 

 middle on the first two segments. 



Female. — Typically of the same form as the male, or more or less 

 robust and ovate. Elytra with the sides moderately strongly arcuate, 

 frequently broadened behind and narrowing more or less to base, 

 rather suddenly arcuately declivous behind, slightly narroAved just 

 before the apex (ovate form). Abdomen evenly and rather strongly 

 convex. 



Measiirements. — Males: Length, 16.5-18 nun.; width 4-() nun. Fe- 

 males: Length, 17-17.5 mm.; width 7-(').5 mm. 



Genital characters., male. — Edeagophore rather small and fusiform. 



Basale evenly convex. 



Apicale quite equilaterally triangular: surface depressed and feebly 

 membranous at middle ; sides more or less feebly arcuate and slightly 

 sinuate before the apex, the latter not recurved, blunt and evenly 

 rounded : base broadly lobed at middle and very feebly sinuate 

 laterally. 



Sternite subparabolic in outline. Each lobe with the external 

 border evenly arcuate to apex, the latter narrowly rounded ; internal 

 border more or less sinuate; surface rather densely and strongly 

 punctate, setose, setae moderate in length. Membrane not setose at 

 bottom of the sinus. 



Female. — Genital segment triangular, surface of the \alves more or 

 less inwardly declivous, feebly setose. 



Vahmla (Plate 5, fig. 11). — Dorsal plate elongately triangular, nar- 

 rowing from base to apex, smooth and shining, quite impunctate, 

 more or less feebly concave; external border not explanate, quite 

 straight; apical margin narrow, not wider than the base of apex, 

 angle not evident, rounded internally with the internal margin, the 

 latter quite straight: apex quite narroAv and slightly produced, 

 convex above, slightly coucave beneath, chitino-membranous, tip 

 rounded and but slightlv narrowed, smooth and shining, with few 



