136 GEO. II. HORN, M. D. 



tiguous. Tarsi longer than the tibice, first joint very small, very indistinct, 

 apparently four-jointed. 



CONONOTTJS Lee. 

 C. macer. elongate, tes^aceolls, densely covered with greyish pubescence. 

 Head coarsely punctured, thorax obcouical, convex, one-half broader in front 

 than behind, sides feebly rounded in front, surface coarsely punctured, more 

 densely in the middle and towards the base. Elytra elongate oval, convex, 

 with strife of coarse punctures, becoming obsolete towards the apex. Length 

 .14— .16 inch. 



Not rare in Owen's Valley, California. Under stooes. 

 This species differ from so'icfiiis in the form of the thorax and the 

 sculpture of the elytra. In the latter species the thorax is much broad- 

 er in front, being therefore nearly as broad as long-, and twice as broad 

 in front as at base. The thorax is also flattened above, very evenly 

 punctured and much less densely pubescent. From punctatus it dif- 

 fers in size, and the proportions of thorax j in this species the thorax 

 is more robust, shorter and more convex, less broad (relatively to the 

 base) in front, and with the sides rather more strongly rounded. The 

 surface is also less densely pubescent, and with the hairs more erect. 



They may be distinguished by the following table : 

 Elytra confusely punctured. 



Thorax very broad in front, depressed above, .13 — .15 inch....sericans Lee. 

 Elytra with strife of large punctures. 



Surface densely clothed with pubescence, .14 — .Ifi inch macer Horn. 



Surface sparsely clothed with pubescence, .06 inch punctatus Lee. 



MYCTERUS Clairv. 

 M. flavipennis, black, opaque, elytra orange-yellow; head and thorax black, 

 opaque, very densely and rather coarsely punctured, thorax broader behind, 

 not longer than broad, sides behind the middle nearly straight, anteriorly 

 rounded. Elytra oval, coarsely and moderately densely punctured, and sparsely 

 clothed with short recumbent silken pubescence. Beneath black, densely and 

 coarsely punctured, abdomen more finely and less densely punctured, and 

 sparsely covered witli a whitish, silken pubescence. Legs, antennte and jialpi 

 nearly black, Length .25 inch. 



Collected by Wm. 31. Gabb in Oregon. A single $ specimen. 



Head entirely black, parts of mouth (excejjt palpi) paler; antennse dark, 

 nearly black ; thorax opaque-black : elytra orange-yellow; body beneath black ; 

 legs dark almost black. 



Our species, of which this is the third, appear scarcely to differ in 

 form and hardly in size, and it is consequently only on difference of 

 color or characters in the antennae of % .that specific distinctions must 

 be founded. The form of antenna of the S is without doubt the cha- 

 racter of greatest value in separating the species. It is not possible 

 to assign a place by means of it to Jinvipenn is, one 9 only being known. 

 Our three species thus differ : 



