58 AMERICAN COLEOPTERA. 



It is abundant in the Rocky Mountains of Colorado, extending 

 northward to Alberta, and from thence westward to Oregon and 

 British Columbia. 



47. A. subpiiiictaf a Lee. — Oval, moderately convex. Nigio-jeneous, 

 shining; surface finely alutaceous. Head slightly narrower tlian the thorax at 

 apex; antennae shorter tlian the head and thorax, black, the two basal joints 

 paler, joints 2-3 strongly carinate; palpi piceous. Prothorax nearly twice as 

 wide as long, snliquadrate, narrowed from slightly in front of base, usually sub- 

 punctate at base; apex emarginate, the anterior angles not prominent; sides 

 rounded, the margin narrowly reflexed, the posterior lateial setigerous jiuncture 

 about equidistant from basal and lateral margins; transverse impressions obso- 

 lete; median line fine, subentire ; basal impressions sliallow and rather feebly 

 defined, the inner linear, the outer forming a broad depression ; base tiuncate; 

 hind angles rectangular, not carinate. Elytra very slightly wider than the 

 thorax, striate; strise entire, punctate, sometimes very finely, the scutellar stria 

 without ocellate puncture at base, the eighth with the row of ocellate punctures 

 narrowly interrupted at middle; intervals flat. Body beneath black, impunc- 

 tate. Legs black; anterior and hind femora with two, the middle with four 

 setigerous punctui'es along the inner margin ; tarsi not grooved on the outer 

 side. Length .27-.32 inch ; 6.75-8 mm. 



Very closely allied to confusa, from which it differs by the better 

 defined basal impressions of the thorax and the punctate elytral 

 strise. The ptinctuation of the latter is subject to some variation, 

 being usually fine and not clearly defined, although in one or two 

 examples seen it is very distinct. That of the base of the thorax is 

 very feeble, in some specimens obsolete. The basal impressions of 

 the thorax, although better defined than in conftisa and protensa, 

 are much less distinct than in polita. 



It occurs in Colorado and New Mexico. 



43. A. coeleb$>» n. sp. — Form rather elongate, nearly oval, convex. Color 

 above seneous, shining, the inflexed portion of the elytra more or less tinged 

 with green ; surface very finely alutaceous. Head as wide as the thorax at apex ; 

 frontal grooves very short, punctiform ; antenna; shorter than the head and 

 thorax, black, the two basal joints dark rufous, joints 2-3 distinctly carinate 

 jibove ; palpi black. Prothorax subquadrate, more than one-half wider tlian 

 long, impunctate, narrowed from slightly in front of base; apex emarginate; 

 sides rounded, the margin narrowly reflexed, the posterior lateral setigeious 

 puncture much nearer the basal than the side margin ; base truncate; transverse 

 impressions obsolete; median line very fine, abbreviated in front; basal impies- 

 sions feeble; hind angles slightly obtuse, slightly rounded at tip, not carinate 

 Elytra scarcely wider than the thorax, finely striate; stria; entire, finely but 

 distinctly punctulate, sutural stria without ocellate puncture at base, the eighth 

 with the row of ocellate punctures rather broadly interrupted at middle ; inter- 

 vals flat. Body beneath black, slightly icneous, impunctate ; prosternuni very 



