NOUTII OF MEXICO. 



315 



E. hirsuta, Loo., Proo. Acad. 1801, p. 352. 



Readily known from the two preceding, by the sinning-, densely punctured and pubes- 

 cent elytra. Its form is more robust and the elytra more broadly oval. 

 From the same regions with pilosa. 



Length .40-. 44 inch. 



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



Sub-Genus Blafylis. 



This sub-generic name is proposed for some small species in which the 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 arc all unarmed. The thorax has rather strongly rounded sides, and 

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

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

 The tibial spurs are usually short, stout and sub-equal. 



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

 which cordata may be considered the central form. The peculiar tarsal vestiture is seen 

 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 are found in the sub-genus. The first contains species with a less 

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



E. soabripennis, Loo., Proo. Acad. 1859, p. 77, $?; imutta, Leo., Proo. Acad. 1861, i>. 352, %. 



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

 the sides much less rounded than any of the species of the sub-genns. The elytra are 

 very densely and irregularly muricately punctured. 



From Santa Barbara and Ft. Tejon, California. 



Length .S5-.65 inch. 



E. olavioornis, Esoh., Zool. AM. 3, p. 11 Mann. Beitrag. 270; impressieoUis, Boheniann, Eugen. Resa. Ins., 

 p. 90. 



The imprextticoUis of Boliemann, is merely a specimen of this species with two thoracic foveas. Accidental varie- 

 ties of this kind frequently occur in many of the speoies, especially in small Individuals'. 



This species is among the smallest of the genus, and may be easily recognised from 

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

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



