NORTH AMKRICAN COLEOPTERA. 17 



rowed from behind the middle to the apex, strise well impressed, moderately 

 closely piinetate, intervals convex, rather sparsely punctulate. Body beneath 

 rather closely punctulate, the coarser punctures evident on the metasternuni, 

 hind coxal plates and abdomen ; jirothorax with submarginal lines impressed, 

 extending to middle or anterior third; intercoxal process long, feebly flexed, 

 raarsined behind, very nearly or quite to apex; the mesosternal fossa has the 

 sides less prominent and more oblique than in the preceding species; the hind 

 coxal plates are nearly transverse posteriorly, the outer angles broadly rounded ; 

 legs piceous, varied with rufous, or entirely yellow, slender, the tarsi shorter 

 than the tibise, the first joint of the hind tarsi a little longer than the last, that 

 of the middle tarsi about equal in length, and that of the anterior tarsi a little 

 shorter than the last. Length .30-. 34 inch; 7.5-8.4 mm. 



Bitter Root Valley, iMonttina, Garland, Col. Collections LeConte 

 and Horn. 



The Colorado specimens are a little more convex and more strongly 

 punctulate. 



17. C'. nevaclensis n. sp. — Eobust, black, lustre dull, almost subopaque 

 (dothed with fuscous pubescence and short, suberect bristles, tarsi rufous. An- 

 tennse black, serrate, as long as the head and thorax in the J. Head densely, 

 finely punctate, rather broadly impressed behind the front. Thorax densely, 

 finely punctate, convex, broader than long in the 9i sides strongly narrowed 

 and arcuate in front, moderately narrowed behind, very feebly sinuate, the an- 

 gles not diverging, scarcely or not impressed behind, the basal fissures moder- 

 ately long, the basal teeth rounded, the median one obsolete. Elytra a little 

 wider than the thorax, convex, sides subparallei, narrowing at posterior third, 

 stripe moderately deep and narrow, with rather closely placed elongate punctures, 

 intervals moderately convex and rather closely punctulate. Body beneath rather 

 closely punctulate, with sparser coarser punctures intermixed; prothorax with 

 submarginal lines well impressed, short, or reaching the middle, the intercoxal 

 process is moderately long, slightly convex beneath and distinctly ascending, the 

 marginal lines reaching towards the tip ; the hind coxal plates are well developed, 

 the posterior margins being transverse, and the exterior angles prominent and 

 rounded. Legs black, tarsi and sometimes the tibise in part, rufous, last joint of 

 tarsi longer than the first. Length .35-. 37 inch ; 9-9.5 mm. 



Nevada. Three females, Dr. Horn. 



Resembles large specimens of tenebroms, but apart from the inter- 

 coxal striae it is distinguished by the denser punctuation of the tho- 

 rax and the broader hind coxal plates. The sides of the thorax are 

 hut little narrowed behind, the legs are a little stouter than in the 

 same sized specimens of tenebrosiis, the tarsi shorter and stouter with 

 the first joint more densely spinous beneath. The coarser j)unctures 

 of the pronotum are evident, but only a little larger than the others. 



IS. C gagates Er. — Size small or moderate, convex, black and shining, the 

 5 frequently stouter, clothed with more or less developed, fine, cinereous pubes- 

 cence and short suberect bristles. Legs sometimes in part (lale. Antennaj rather 



TRANS. AM. ENT. SOC. XVI. (3) . .J.\NUARY, 1889. 



