NORTH OF MIX 315 



E. hirsuta, Loc, P Acad. 1801, p. 352. 



Readily known from the two preceding, by the shining, d msely punctured and pub js- 

 cent elytra. Its form i- more robust and the elytra more broadl) oval. 

 From the same regions with pilosa. 



Length . 10— .44 inch. 



Occurs in Owens' Valley, California, (Horn), ami western Nevada (Gabb). 



Sub-Genus Bi lpi lis. 



This sub-generic name is proposed for some small species in which tin 1 males have 

 two (sometimes three) basal joints of the anterior tarsi clothed with a rather dense silken 

 pubescence, obliterating entirely the groove. These joints are never dilated nor thick- 

 ened. The femora are all unarmed. The thorax has rather strongl) rounded sides, and 

 always greatly narrowed at base, frequently constricted, appearing to ho almost peduncu- 

 late. The elytra are oval, strongly rounded on the side-, humeral angles usually obtuse. 

 The tibial ^iuin are usuallj short, stout and sub-equal. 



This assemblage of characters will readily distinguish the species of this sub-genus, of 

 which cordata may he considered the central form. The peculiar tarsal vestiture i^ -eon 

 also in the following sub-genus, where it becomes more spongy, and in ventricosa, where 

 the anterior tarsi of some males are more hairy than spinous. 



Two sections an 1 found in the sub-genus. The firs! contain- species with a less 

 strongly constricted thorax, and with the lateral margin extending to the basal margin. 



E. scabripennis, Lee, Proc. A.cad. 1859, p. ' i . Lee, Proc. A. -a, I. 1861, p. 352, V 



The base of thorax is rather more strongly rounded, the disc much less convex, and 

 the sides much lev- rounded than any of tin- species of the sub-genns. The elytra an' 

 very densel) and irregularly muricatelj punctured. 



From Santa Barbara and Ft. Tejon, California. 



Length .55— .65 inch. 



E. clavicomi Esch., Zool. Atl. 3, p. 11 Mann. Beitrag. 270 , Bobemann, Eugen. Resa. Ins., 



The t ' Bobemann, is merely a specimen of this species with two thoracis \ il varie- 



i ies of i lii- kind frequently occur in many of the spi ally in small individuals. 



This species is among the smallest of the genus, and may he easilj recoguised from 

 the characters given in the table. The middle lobe of the mentum is much more acute 

 and prominent than in its allies, resembling somewhat that of the larger species preA iously 



