202 BULLETIN 63, UNITED STATES NATIONAL MUSEUM. 



arcuate, with apex rounded; surface densely punctate and setose in 

 apical two-thirds, setae quite long and not extending upon the mem- 

 brane across the sinus; the latter nearl}^ closed by the same. 



The lobes internally at base and cephalad to the sinus are rendered 

 semicircularly sinuate by an interlobar transversely oval membranous 

 area, the membrane of wliich is frequently transversely rugose. 



By the form of the elytra two races may be recognized as follows: 



ELEODES SUTURALIS (typical variety). 



Oblong, sides of the elytra evenly arcuate from base to apex, size 

 smaller. 



Measurements. — Males: Length, 20-2G mm.; width, 11-11.!2 mm.; 

 Females: Length, 21.5-28 mm.; Avidth, 9.5-12.2 mm. 



ELEODES SUTURALIS van TEXANA LeConte. 



Elongate oblong. Sides of the elytra more or less distinctly 

 parallel, size larger. 



Measurements. — Males: Length, 30-35 mm.; width, 11-li mm.; 

 Female><: Length, 30-32 mm.; width, 11-13 mm. 



Female genital eharaeters. — Sutiiralis: Genital segment subtrape- 

 zoidal, slightl}^ elongate, rather robust and setose, the flying semi- 

 erect hairs not very long and somewhat evenly distributed. 



Valvida (Plate 1, fig. 14). — Dorsal plate oblong, with the sides more 

 or less reflexed, scarcely retracted, quite parallel; external bordei- 

 quite straight, the internal more or less arcuate and the apical margin 

 is rounded and prominent externally, becoming inwardly oblique 

 internally; surface deeply concave, finely, sparseh^ punctate and 

 setose, seta^ quite long. Submarginal groove visible from above, 

 broad and shallow toward base, fine toward apex, the side of llic 

 lateral plate visible and limiting it externally. 



Apex short and inconspicuous, scarcely more prominent posteriorly 

 than the appendage, finely setose. 



Appendage short, conical, and inconspicuous, with a pencil of rather 

 long hairs at tip; margin of the fossa with many setae, especially at 

 apical margin of the dorsal plate, seta> soft and moderately long. 



Basal prominences moderate. 



Sv.perior pudendal membrane reacliing about one-third to one-linlf 

 of the distance from the apex and not rugulose. 



Yentrolater(d surfaces. — Body rather strongly and transversely 

 inflated in basal ]i:ilf. moderately transversely concave laterally be- 

 fore the apices; surface finely punctate and setose in apical half. 

 Internal margins of the valves contiguous for a short distance at 

 base. Genital fissure long and fusiform. 



Female ge^dtal characters. — Texana. — Genital segment subtrape- 

 zoidal, rather short, robust, and setose. 



