REVISION OF ELEODTINI BLAISDELL. 353 



Appendage short mammilliform, with a pencil of rather long seta^ 

 at tip. 



Superior pudendal niemhrane apparently not rngulose and rather 

 broadly exposed, reaching abont to the apical fifth of the dorsal j)late. 



Basal proniinences not e\'ident. 



Ventrolateral surfaces slightly triangular from base to middle, 

 sides quite evenh^ convex and with a few rather coarse punctures. 

 Submarginal groove moderate beneath the feebly expanded external 

 margin of the dorsal plate, more concave at base of the apex laterally. 

 Internal margins of the valves contiguous in basal two-thirds, geni- 

 tal fissure fusiform in apical third, and the inferior pudendal mem- 

 brane is not visible. 



Ilahitat. — California (Plumas County, elevation, l,i200 feet; Moke- 

 lumne Hill, Calaveras County, elevation, 1,800 feet. — Blaisdell). 



Number of specimens studied, 5 (4 males, 1 female). 



Sexitypes in my own collection. 



Type-loe(dity. — Plumas County, California; collector. Dr. AValther 

 Horn, of Berlin, to whom I dedicate the species. 



Salient type-characfers. — Subglabrous and shining. Pronotum 

 with disc moderately convex, rather finely, distinctly, and quite 

 densely punctate, iMUictato-granulate along the margins laterally, 

 jiunctures not strongly marked at center; sides evenly and moderately 

 arcuate, not suddenly sinuate at basal seventh, thence rather briefly 

 straight to the basal angles. Elytra gradually widening from each 

 extremity to middle, humeri obsolete, surface with simple punctures 

 at center of the dorsum, becoming submuricate laterall}^, with a ten- 

 dency to coalesce transversely in twos and fours. 



Diagnostic characters. — B3' its smaller size and more graceful form, 

 smooth integuments, narrower and distinctly oval elytra, rather pro- 

 portionally larger prothorax, which is somewhat remote from the 

 elytra, and distinctly less convex form, hornii is sufficiently distinct 

 from consohrina although derived from the same ancestral stock. 



Neotonue compared with hornii is larger and strongly convex; the 

 male is much less narrow. 



In fi/chsli the integuments are opaque and the humeri are more 

 distinct, although often broadly rounded; the elytra are broader and 

 much more strongly convex — even somewdiat inflated (female). 



In 2?arricoJli^ the humeri are generally strongly evident and the 

 prothorax distinctly constricted near the base. Parvicollis var. con- 

 stricta more nearly approaches hornii in the degree of convexity, but 

 the sculpturing is difi'erent — coarser and roughly muricato-granu- 

 late — the humeri are distinct, and the elytra in the males are more 

 oblong oval and not narrowing somewhat equally each way from the 

 middle. 



59780— Bull. G3— 09 23 



