460 Coleopterological Notices^ VI. 



1. P. graiidiceps Lee. — Proc. AcacT. Nat. Sci., Phila., 1866, p. 355. 



Parallel, moderately convex, highl.y polished, black, the elytra 

 piceous-black ; femora and tarsi dark rufo-ferruginous, the tibife 

 infuscate except toward base; antenna piceous-black, testaceous 

 toward base ; pubescence very sparse, subcinereous and suberect, 

 interspersed throughout the upper surface with numerous very 

 long, erect and bristling black sette. Head large, about as wide 

 as the prothorax in the male, polished, though very obsoletely 

 reticulate, convex, minutely and sparsely punctate; frontal im- 

 pressions verv lai-ge, deep and remotely separated; eyes convex 

 and prominent, the sides of the neck strongly convergent behind 

 them ; antennre well developed, nearly one-half longer than the pro- 

 thorax, feebly serrate, joints six to ten subsimilar, feebly transverse 

 and but slightly incrassate. Prothorax three-fifths w'ider than 

 long, the sides strongly rounded just behind the middle, equally 

 convergent and nearly straight thence to apex and base, all the 

 angles obtuse and blunt but traceable; apex and base equal and 

 equall}^ arcuato-truncate; disk minutely and remotely punctate, 

 perfectly smooth and polished to the extreme edges. Elytra but 

 slightl}' more than one-half longer than wide, equal in width to 

 the prothorax, parallel and straight at the sides, evenly and not 

 very obtusely rounded at apex, rather coarsely and sparsely punc- 

 tate. Length 3.7 mm.; width 1.3 mm. 



California. A remarkably distinct species, described above 

 from the male. I have not seen the female, which may differ 

 greatly in the size of the head. The male sexual characters at the 

 abdominal apex are very simple, the fifth segment being rather 

 narrowly truncate at tip. 



EITDASYTES n. gen. 



The three species which it seems advisable to separate from 

 Trichochrous under this name, do not form a very distinctly 

 characterized genus, and differ onl}- in having the epipleuroe 

 rather wide, flat and horizontal, and the lateral margins of the 

 elytra narrowly reflexed, this being a consequence of the epipleu- 

 ral structure. Still, if we regard epipleural structure as one of 

 the few important taxonomic elements in this tribe, it will cer- 

 tainly^ be necessary to form of these species a genus different from 

 Trichochrous, and, after all, when we compare the structure of 



