EEVISION OF ELEOt)IINI BLAISDELL. 239 



Sternitc transverse. Each lobe with the external border quite 

 evenly arcuate, or rather straight in basal half, and quite broadly 

 rounded at apical border, angle introrse and narrowly rounded; in- 

 ternal border more or less sinuate; surface feebly convex, rather 

 densely punctate in aj^ical two-thirds and setose, setae quite long in 

 apical third. Sinus rather broad with membrane not setose across 

 the bottom. The lobes are separated cephalad to the sinus by a rather 

 broad oval membranous area, which is not as sharply defined as in 

 the Ohscura group. 



Female. — Genital segment trapezoidal in outline and finely setose. 



Valvula (Plate 4, fig. 10). — Dorsal plate oblong, the internal third 

 in apical half strongly reflexed and glabrous; surface longitudinally 

 concave, shining, finely and not densely punctate, setose, set» fine; 

 outwardly the surface is obliquely reflexed; external margin rather 

 feebly and broacll}' sinuate ; internal border arcuate in apical half, 

 thence to base sinuate; apical margin not reflexed and more or less 

 evenly arcuate and not easily differentiated from the base of the 

 appendage, angle rounded. Apex triangular and moderate, clothed 

 with very fine inconspicuous seta?, which are not longer at tip. 



Appendage flattened, as broad at base as the apical margin of the 

 dorsal plate, rather irregularly semioval, shorter than the apex, 

 finely setose, setae short and soft ; margins of .the fossa thin and 

 closely applied to base of the appendage. 



/Superior pudendal membrane attaining the middle of the dorsal 

 jDlate, finely and longitudinally rugulose. 



Basal prominences rather small. 



Ventrolateral surfaces. — Body of the genital segment with the sur- 

 face evenly convex but not noticeably inflated in basal half, quite 

 strongly and transversely concave before the apices; surface shining, 

 finely punctate and setose, setae fine. Internal margins of the valves 

 contiguous in basal fourth. Genital fissure long and evenly fusiform, 

 inferior pudendal membrane visible in basal half. 



Habitat. — New Mexico (LeConte and Horn; Warren Knaus; 

 H. C. Fall; collection of Hubbard and Schwarz) ; Arizona (H. K. 

 Morrison ; Walnut, July, jNI. L. Linell ; Santa Rita Mountains, June ; 

 Sulphur Springs, May; Fort Grant, July; San Simon, July; Chi- 

 ricahua Mountains, May, Hubbard and Schwarz; collections Chas. 

 Fuchs and C. Y. Riley) ; Texas (Alpine, June, elevation 4,400-4,600 

 feet, H. F. Wickham ; Fort Bliss, collection H. C. Fall) ; Mexico 

 (State of Sonora, Morrison). 



Number of specimens studied, 40. 



Type in the LeConte collection. 



Type-locality. — Arizona (or Sonora, type bears a silver disc indic- 

 ative as given) ; collectors, Webb and Schott. 



