AMERICAN COLEOPTERA. 39 



clypeal convexity and frontal impressions feebly denned, clypeal 

 suture deep; clypeus more closely punctate, margin sinuato-truncate 

 with rounded angles — nearly as in brevicollis. Prothorax more than 

 twice as wide as long, sides broadly arcuate, narrowing from the ex- 

 treme base; angles well defined, the posterior ones broadly foveate or 

 concave, front angles not impressed. Elytra as in brevicollis. Body 

 beneath rather broadly subimpunctate at middle, sparsely finely 

 punctate at sides. Legs nearly as in brevicollis. Length 8J- lOf mm.; 

 width 4.5-5.8 mm. 



This species appears to be far less abundant than brevicollis, 

 to which it is most closely related and which it somewhat 

 resembles in miniature. It has been taken by Bowditch near 

 Durango, Colorado; by Barber and Schwarz at Las Vegas 

 Hot Springs, New Mexico, and by Snow in New Mexico, 

 locality not stated. 



The prothorax is more strongly transverse than in any other 

 species known to me, though some specimens of brevicollis 

 approach rather closely. From the latter it may at once be 

 separated by the small size and unimpressed apical angles of 

 the thorax. From semifoveala, which is of nearly the same 

 size it differs in its somewhat more transverse thorax, which 

 is widest at extreme base, with sharper base angles; sparser 

 finer punctuation, and in having the basal rather than the 

 apical thoracic angles impressed. 



25. D. levicoxa n. sp. 



Moderately robust, slightly or scarcely wider behind, brown to 

 piceous, the elytra often dark castaneous with the head and prothorax 

 blackish; surface rather strongly shining, the elytra with barely visible 

 alutaceous sculpture. Mentum as in belfragei except that the anterior 

 declivity begins at about the anterior third; there is at the summit 

 of the convexity a row of three or four punctures, one or two of which 

 may bear short fine setae, but these are most often entirely absent. 

 Head closely rather coarsely punctate, the clypeus densely so; front 

 narrowly nearly smooth along the clypeal suture, the latter distinctly 

 impressed; post-clypeal convexity broad but distinct; clypeal margin 

 either arcuate or feebly sinuate at middle. Prothorax fully twice as 

 wide as long, sides parallel or just perceptibly convergent and sub- 

 sinuate posteriorly in basal two-fifths, broadly rounded and con- 

 vergent in front; disk rather sparsely not coarsely punctate, the 

 punctures separated by about their own diameters at sides, sparser at 

 middle; angles sharply defined, the hind ones nearly rectangular as 



TRANS. AM. ENT. SOC, XXXV. FEBRUARY, 1909- 



