REVISION OF ELEODTTNT BLAISDELL. 149 



lidsdh' olilonii", (juite evenly comex ahoxe ami not arched. 



Ap'/raJe trian<>ular and sli<>htlY elon<>ate; e^■enly convex above, 

 with a median hmoitudinal and membranous o-roove in the middle 

 third; apex prodnced and quite acute; sides arcuate in basal third, 

 thence broadly and feebly sinuate to tip; base with a rounded lobe 

 at middle and feebly sinuate laterally. 



Sternite slightly transverse and stron«iy chitinized. Each lobe 

 rather narrowly trianaular; external boi'der rather evenly arcuate, 

 apex narrowly rounded, internal border sinuate; surface glabrous 

 in basal third, densely punctate and setose in apical two-thirds, 

 seta' rather long and dense. Sinus broad and quadrate and the mem- 

 brane is not setose. 



Female. — Genital segment short and robust, subparabolic in out- 

 line. 



Valrula (Plate 4, fig. 13). — Dorsal plate subobovate to suboval, 

 about twice as long as wide, sides not reflexed, margins accurate; sur- 

 face slightly concave and more or less shining, punctate in apical 

 two-thirds; apical margin more or less evenly and strongly rounded, 

 often not distinctly defined from the apex, the latter very small and 

 short, subacute and narrowly rounded. 



Appendage small, conically mammilliform, and projecting from 

 beneath the external border of the apical margin of the dorsal plate. 

 Fossa not visible from above, and small. Apex, appendage, and 

 apical half of the dorsal plate minutely setose. 



Basal prominences obsolete. 



/Superior pudendal memhrane reaching to the middle of the dorsal 

 plate and longitudinally rugulose. 



Yentrolateral surfaces not inflated, evenly convex, surface lines 

 straight viewed longitudinally. Surface rather densely punctate 

 and the a])ex finely setose ; submarginal groove not developed ; inner 

 borders of the valves contiguous in basal third, the genital fissure 

 subapical and fusiform with the inferior pudendal membrane visible 

 in basal half. 



Ilahitat. — California (Panamint and Coso valleys, A. Ku?bele; 

 Los Angeles County, D. W. Coquillett : JVlount I'inos, Kern County. 

 F'ordyce Grinnell; Colorado Desert, San Bernardino County, and 

 Oak Creek, eastern Kern County, Dr. E. C. Van Dyke). Xevada 

 (collected by Wm. M. Gabb, Horn). 



Number of specimens studied, 24. 



Type (male) in the LeConte collection. 



Type-locality. — " California."' 



Salient characters. — Head and thorax strongly and confluently 

 punctate. Thorax subquadrate, sides rounded and not margined. 



