-^^o. 3.j LE CONTE ON EOCKY MOUNTAIN COLEOPTERA. 517 



nis Lec. loc. cit. 225, but quite different by the larger, more distinctly 

 scabrous protborax, and different color. 



The last named species was also found by Mr. Blanchard on Pimis 

 rigida. The 9 differs from the S by the smaller eyes and less elongate 

 9-11 joints of antennoe, which, however, are not as stout as in E. 

 luteipennis. 



Ernobius filicornis.— Elongate, piceous, head and prothorax nearly 

 opaque, finely punctulate, scabrous, finely pubescent; eyes {$) large, 

 convex, antennse very slender, 2d joint stouter, and a little shorter than 

 the 3d, which is slender ; 4th-8th short, 9th as long as the 4th-8th 

 united, 10th and 11th each as long as the 9th. Prothorax transverse, 

 sides narrowly margined. Elytra strongly but finely punctured, shin- 

 ing, sparsely pubescent, with very short prostrate hairs proceeding from 

 each puncture, giving a pruinose appearance. Length, 2""". 



Medford, Mass. ; one ^. Mr. E. P. Austin. 



Gastrallfs marginipennis.— Cylindrical, piceous, not perceptibly 

 punctulate, clothed with extremely fine sericeous gray pubescence, an- 

 tennae and legs testaceous. Prothorax uniformly convex in front, hind 

 angles obliquely explanate. Elytra with one marginal stria, which is 

 famter near the middle and obliterated near the tip. Length, 1.5-2'"">. 



Garland, Colo. ; several specimens. This is the first recognition of 

 the genus in our fauna. 



LUPERUS NiGROCYANEUS.— Black or blue black, shining, antennse 

 and legs piceous, base of the former testaceous, front tibite and tarsi 

 tinged with same color. Prothorax about as long as wide, moderately 

 rounded and finely margined on the sides, shghtly narrowed in front, 

 nearly smooth without vague transverse impression. Elytra a little 

 wider than the prothorax, punctulate. Antennae with 3d joint longer 

 than 2d but shorter than 4th. Length, 3.3-4.3"'". 



Yeta Pass. In the ,? the 5th ventral is smooth at the middle and 

 feebly impressed transversely; the last dorsal is obtusely triangular and 

 hoUow beneath at the tip. Eesembles L. cyanellus Lec, but the anten- 

 nsB and legs are dark, and the sides of the prothorax are more rounded, 

 especially near the base. 



Ch^tocnema cribrifrons.— Elongate-oval, convex, coppery 

 bronze rather shining. Head sparsely punctured, front with a few 

 very large punctures. Prothorax transverse, slightly narrowed in front, 

 rounded on the sides, punctured. Elytra with strice composed of large 

 punctures, interspaces flat, smooth. Ventral segments, 1st, 2d, and 3d 

 nearly smooth at the sides ; 4th and 5th sparsely deeply punctured. 

 Antennae brown, outer joints piceous. Legs partly brown. Length, 

 2.8""". 



Alamosa, Colo.; one specimen. Of nearly the same form as C. 2)ro- 



