Coleopterological Notices, VI I. 635 



Clypeus with a deep median notch, which is rounded at the bottom ; pro- 

 thorax widest near the apex Clypeale n. sp. 



Upper surface with obvious erect setae; size larger, 3 mm. in length. 



californicum Csy. 



Unicolor appears to undoubtedly differ from castaneum in the 

 characters given above ; it is rather more elongate than castaneum 

 and the form of the scutellum is perfectly constant, as far as I 

 have been able to observe ; these species both occur in the Atlan- 

 tic States and westward, at least as far as Illinois. The Califor- 

 nian simplex is quite different in its much shorter and more con- 

 vex, though equally finely and sparsely punctate prothorax, and 

 the body is larger and stouter than in castaneum or unicolor with 

 more oval outline ; in the scutellum and general sculpture it 

 closely resembles castaneum and sylvaticum - it seems to be con- 

 fined to the coast regions from Sta. Cruz northward. Under suit- 

 able amplification and direction of sight extremely minute erect 

 setse can be observed arising from the punctures in nearly all of 

 the species, but californicum is the only one in which they become 

 vevy obvious, and this species differs besides from the others in its 

 much larger size. The three following species are hitherto unde- 

 scribed. 



C. sylvaticum. — Elongate, suboval, moderately depressed, polished, 

 dark rufo-castaneous, more blackish beneath, the legs and antennal club paler 

 and rufous. Head slightly more than }4 ^s wide as the prothorax, wider than 

 long, evenly convex, finely, sparsely punctate, the eyes minutely and sparsely 

 setulose; antennse moderate in length, the club paler. Prothorax quadrate, 

 widest at the middle, the sides parallel and feebly arcuate throughout, 

 rounded anteriorly; apex evenly emarginate in circular arc and almost % as 

 wide as the base, the latter transverse, with the median lobe distinct though 

 broadly rounded ; basal angles right and not sharply defined, being minutely 

 rounded; surface transversely and feebly convex, more distinctly so toward the 

 apex, transversely and quite distinctly impressed at the basal margin at each 

 side and also feebly impressed just behind the eyes at the apical margin; punc- 

 tures small and remote but rather strong, bearing minute erect setse remotely 

 interspersed with other erect setse which are coarser and longer, the setse ob- 

 servable under a power of about 80. Scutellum transversely oval, very broadly 

 rounded behind. Elytra about % longer than wide, not quite twice as long as 

 the prothorax and rather more than }^ wider, widest before the middle; sides 

 broadly arcuate; apex broadly parabolic; striae well impressed, finely punc- 

 tured, the intervals somewhat convex, the first depressed as usual toward tip, 

 the first stria closely approaching the suture posteriorly. Under surface finely 

 but strongly and rather sparsely punctured. Length 2.0 mm. ; width 0.78 mm. 



Idaho (Coeur d'Alene); California (Lake Tahoe). 



