136 ENTOMOLOGICAL SOCIETY 



Male. Lower surface more strongly punctate; especially in ventral 

 concavity which is moderately deep, strongly sloping toward the center, 

 especially in the metasternum; pygidium subpentagonal with rounded 

 base. 



Female. Pygidium narrower, base less broadly rounded. 



Length 7.0-7.2 mm ; width 2.5-2.9 mm. 



Phoenix, Ariz., and "Arizona" (i tf, 3? 9, Colls. H. C. Fall 

 and Chas. Palm); Fresno, Cal., May 21 (i 9, Hubbard and 

 Schwarz). 



Type. No 7905, U. S. National Museum. 



Although closely resembling in a superficial manner others of 

 the venatus group, this species has very pronounced characters, 

 showing some affiliation to neomexicanus. From the latter it is 

 separable by its finer punctuation alone, besides being more 

 robust, its proportions resembling those of vestitus. It is not 

 improbable that the coloration of the species may vary still more, 

 since none of the specimens examined are true to any type ; and 

 it is also probable that the same species extends into Mexico. 



Sphenophorus reticulaticollis Boheman. 



Of the same form as vena/us, a little smaller; body dull red, rostrum 

 (except fossa at base), femora, tibiae and occiput black; surface with a soft 

 velvety natural alutaceous coating, mostly red on the dorsal surface and 

 gray on the sides, completely covering the dorsal surface, except portions 

 of the thoracic vittse, the scutellum, humeral, and subapical callosities, 

 not covering the metasternum and middle of abdomen. Punctuation of 

 entire surface of body distinct and rather dense; on thorax, which is 

 feebly convex, nearly uniform and but little finer on the feebly elevated 

 and very narrow vittae; on elytra strial punctures large, interval punc 

 tures very fine and obscure, on sutural intervals minute and very closely 

 placed. Metasternum and first abdominal segment nearty uniformly 

 sparsely foveate-punctate, second abdominal but little coarser than third 

 and fourth. In $ the ventral concavity is shallow but moderately deep 

 in the middle of the first abdominal, and the pygidium is subquadrangular 

 with apex rounded. In 9 pygidium is somewhat pentagonal with minute 

 lateral tufts. 



Length 7.5-9.5 mm; width 2.8-3.6 mm. 



Palm Springs, Cal., July 2 (Hubbard and Schwarz) ; Los An 

 geles Co., Cal. (D. W. Coquillett) ; Albuquerque, N. M., Feb. 12. 

 16 (H. Soltau) ; Del Rio, Tex., July 23, 24, 955 ft. (H. F. Wick- 

 ham) ; Washington, D. C., August 9, 1881 (Th. Pergande). 



Sphenophorus coactorum, n. sp. 



Form similar to venatus, black, with thick pale gray or brown natural 

 coating, felt-like and persistent, almost completely covering the surface, 

 including the head and base of the rostrum, femora, most of the tibiae and 



