102 AMERICAN COLEOPTERA. 



by a Darrow line and rarely attaining the margin ; in some specimens there are 

 traces of another transverse band in front of the middle. Head alutaceons, as 

 wide as the thorax at apex ; palpi testaceous, the penultimate joint of the maxil- 

 lary piceous ; antennae about one-half the length of the body, piceous, the basal 

 joints testaceous. Prothorax quadrate, about one-half wider than long, as wide 

 at base as apex, alutaceous, less distinctly so or not at all on the disc, more or less 

 rugose at base; median line distinct, subeutire; anterior transverse impression 

 usually rather feebly marked, the posterior deeper; basal impressions broad, 

 moderately deep, bistriate; base slightly obliquely truncate each side; sides with 

 the margin very narrowly reflexed, slightly arcuate in front, rather feebly sinuate 

 behind ; hind angles rectangular, carinate. Elytra slightly wider than the thorax, 

 elongate, subparallel, oblong-ovate, moderately deeply striate ; strise entire, punc- 

 tate to behind the middle, the fifth grooved at tip; intervals slightly convex, the 

 third with the first dorsal puncture about one-third from base, the second about 

 one-third from apex. Beneath black, shining. Legs testaceous. Length .15 -.20 

 inch ; 3.75-5 mm. 



A very pretty species, quite distinct from the others of the group. 

 The humeri of the elytra are more nearly subangulate than in any 

 other species of the series. It seems subject to but slight variation. 



It occurs in Nevada and along the Pacific coast from Alaska to 

 California. 



77. B. iiinbratuni Lee. — Form rather slender, slightly convex. Head and 

 thorax cupreo-teneous, rarely tinged with green or nearly black; elytra testa- 

 ceous, with a small spot on the third interval about one-third from base, a trans- 

 verse band about the middle, concave backwards, another between this and the 

 apex, and sometimes an ill-defined subbasal cloud dusky, the bands often more 

 or less interrupted and usually narrowly connected along the suture. Head 

 alutaceo-granulate, as wide as the thorax at apex; palpi rufous, darker towards 

 the tip ; auteunie about one-half as long as the body, fuscous, the basal joints 

 testaceous. Prothorax quadrate, more or less alutaceous, somewhat rugose at 

 base, as wide at base as apex, rather more than one-half wider than long ; apex 

 nearly truncate; median line distinct, abbreviated before and behind ; transverse 

 impressions distinct; basal impressions broad, moderately deep, bistriate: base 

 slightly obliquely truncate each side ; sides with the margin very narrowly re- 

 flexed, feebly arcuate in front, slightly sinuate behind ; hind angles rectangular, 

 finely carinate. Elytra nearly one-half wider than the thorax, oblong-ovate, 

 finely striate; strise entire, very finely punctate to behind the middle, the fifth 

 slightly grooved at tip ; intervals feebly convex: the third with the first dorsal 

 puncture about one-third from base, the second about one-third from apex. Be- 

 neath black, shining. Legs testaceous. Length .15-. 17 inch : 3.75-4.25 mm. 



This species seems very constant in its coloration. It is most 

 nearly allied to variolosum, from which it differs by its less elongate 

 form, slightly broader thorax, and proportionally wider and more 

 finely striate elytra with the markings brownish and cloud like. 



It is apparently confined to the Rocky Mountain region, being 

 known to me only from Colorado, Wyoming and Nevada. Even 

 in its limited range it appears to be quite local and nowhere very 

 common. 



