NORTH OF MEXICO. 3 13 



what broader than long, feeblj emarginate in front and al base, sides feebly rounded and 

 slightly margined, anterior angles obtuse, hind angles nearly rectangular. The surface is 

 coarsely bul not denselj punctured. The elytra are elongate sub-parallel, raoderatelj 

 convex, with eight entire and a shorl scutellar stria-. The striae are punctured, inter-' 

 slightly convex and verj (eeblj punctured. The legs are black and ill • under sui 

 nearlj smooth. In addition to the generic characters given above, it may be stated that 

 the males have the under surfac i of the anterior femora near the base clothed with rather 

 coarse hairs. 



Rather common in the Atlantic region, under fallen logs or stones. 



c. opacus, Lee, Smitlison. Cont. It". Col., Kansas and New Mexico, p. 13. 



The entire surface is op ique in this sp icies, while in the preceding the surface is shin- 

 ing and of a sub-metallic lustre. The elytra are not striate, bul have rows of fine, closely 

 placed punctures, the intervals being flat and impunctured. The general form is similar 

 td calcaratus, with the elytra less parallel. The thorax is much less distinctly margined, 

 and the under surface less shining. The sexual characters are similar in both species. 



Length .61 inch. 



\ single specimen from the Black Hills, Dacotah, is known. 



XYLOPINUS, Lee. 

 Xylopinus, Lee, < !ol. N. Am.. 231 . 



This genus differs from the preceding notably in the form of the front. The anterior 



margin is truncate or feeblj emarginate, not thickened. The labrum is also more promi- 

 nent and is occasionally so protruded as to allow the basal membrane to become visible. 

 The males have the same sexual characters in the front tibiae as in Centronopm. The 



anterior femora have not the basal hairy spot, nor are the middle tibiae thickened at tip. 

 The front and middle tarsi are more distinctly dilated, and the whole appearance more 

 decidedly like the llelopides. All the Specimens are winged. 



Our species maj be distinguished as follows: 

 Body black, not metallic. 



Legs black. - a pe rdoi des. 



Legs red. m ti pes. 



Body sub-metallic. anes c ens. 



X. saperdoides, Olir., (Tenebrio) Ent :!. 11. taperd . Relops) Beauv. Ins., 162, pi. 31, 



li'_'. 3; tpinipet, Fab., El. 1. 16 B renebrio) Neue. Beitrag., p. 16 



The thorax of this species is nearly square, feebly emarginate in front, truncate behind, 

 sides very feebly rounded, anterior angles rounded, hind angles acute with a slight im- 

 pression within. The elytra are elongate, parallel, feebly conv< \. usuallj somewhat flat- 



