NORTH OF MEXICO. '■'>'■'>'> 



with striae of punctures, with flat interstices finely and very sparsely punctured. The un- 

 der surface of the body is smoother and more shining. 



Length .80-.96 inch. 



The type specimens were from Colorado, others have since been found along the Sier- 

 ras of ( lalifornia. 



Lew i - i i. Horn. t 



In this form the whole surface is -till more shining than in the preceding two. The 

 stria' of the elytra are scarcely interrupted, the interstices convex, impunctured and finely 

 transversely wrinkled. 



I i-'h .80-.96 inch. 



Collected rather abundantly by Dr. Lewis, in the region of tin- Raton Mountains of 

 stern New Mexii o. 



COELOCXEMIS, Mann. 

 ■ H. mi-. Mann., Bull. Mosc. 1843, p. 280. 



The mentum is here broader than long, supported on a short, rather broad gular pe- 

 duncle, rounded on the sides, slightly emarginate in front and with the margins not in- 

 flexed. The sculpture of its surface varies. The tibiae of the male are apparently slightly 

 thickened iii their lower half, som iwhat flattened on the inner face, with line of fine pu- 

 bescence on each edge extending half way up. so that the tibia appears grooved on the 

 inner face. The intercoxal process of the abdomen i- very broad and truncate at tip. The 

 first joint of the hind tarsi equals the second and third together, and very nearly equals 

 the last joint. The tibial -purs are here very short. The elytra are connate and the 

 body is apterous. 



The sp cies of this genus resemble Eleodes verj closely in form, but may be at once 

 known by the tarsal vestiture and by the elytra feebly embracing the abdomen. The un- 

 der surface of the head of all the species is very rugose, b) the confluence of rather deep 

 coarse punctures. All are shining, black. They are found rather abundantly in Califor- 

 nia, Oregon and Nevada, under stones or fallen hark, and are rarely found walking in 

 daylight, except when the day is dark and cloudy. They may then be found feedii g 

 growing plants, principally Saxifragea?. 



Our four species may be distinguished as follows: 



Thorax broader than long; strongly rounded or sub-angulate at the sides. 



Elytra broader behind the middle, suddenly declivous behind ; thorax 



narrower at base than long, always sub-angulate on the sides, 



which are rounded anteriorly, sinuate posteriorly. d i la t i c o 1 1 i s 



