KEVTSION OF ELEOUIINI BLAISDELL. 135 



Female. — Genital segment triangulo-({uadrale. rather short, shining 

 and sparsely setose. 



Valvula (Plate 3, fig. 5). — Dorsal plate suboval to oblong, inner 

 third reflexed and outer two-thirds obliquely refloxed ; snrf ace chan- 

 neled between the obliquely reflexed sides, glabrous, very sparsely 

 punctate and setose, setsB moderately long and flying; external border 

 straight or feebly arcuate; internal border more or less sinuous; 

 apical margin somewhat obliquely truncate, angle more or less 

 rounded; apex short and broadly subtriangular. 



Af'pendage short and broad, strongly flattened, somewhat semi- 

 elliptical, evenly and broadh' rounded oi' more or less emarginate at 

 tip, about equal in length to the apex. Fossa transverse and narrow. 

 Apex, appendage, margins of the fossa sparsely set with moderately 

 long hairs. 



Superior pudendal memhrane more or less longitudinally rugulose, 

 reaching to about the apical third of the dorsal plate in the median 

 line, laterally extending directly to the bases of the apical lobes, and 

 appearing triangularly emarginate when the valves are moderately 

 abducted. 



Ventrolateral surfaces (Plate 3, fig. (>) moderately tumid in the 

 basal two-thirds, transversely concave at base of the apices, finely 

 and sparsely punctate, setose; submarginal groove not developed. 

 Internal margins of the valves contiguous in basal third, genital 

 fissure fusiform and not broad. Inferior pudendal membrane not 

 well defined. 



Hahitat. — ^I collected a series of specimens at Yerdi, Nevada, eleva- 

 tion 6,000 feet, in April. They were taken from beneath stones on the 

 level land about the town. 



Number of specimens studied, 15. 



Cotypes in my own and Dr. E. C. Van Dyke's collection. 



Type'loeality. — Verdi, Nevada. 



Salient type-characters. — Thorax subquadrate, sides evenly arcuate 

 anteriorly, thence nearly straight to base; disc rather densely and 

 irregularly punctured; angles obtuse, and not rounded. 



Elytra with the humeri small and subacute, scarcely prominent 

 anteriorly; disc finely muricately punctured and sparsely clothed 

 with flying hairs. 



Diagnostic characters. — Letcheri is unique in having only the 

 elytra set with moderately long hairs, it recalls Cratidus oscidans, 

 but the pubescence is not nearly so conspicuous as in the latter species. 



At first glance it might be taken for a humeralis, especially if the 

 pubescence has been removed, but the small size of the anterior tibial 

 spurs will quickly separate it from the female of that species; the 

 males would be more difficult of separation under such conditions. 

 In letc/ier/ the sides of the pronotum are scarcely sinuate posteriorly 



