ROLAND HAYWARD. 99 



About thirty specimens liave been examined. A lai'ge number 

 of these were collected by Mr. F. C. Bowditch and myself in the 

 mountains of southwestern Colorado, at an altitude of from 8000 to 

 10,000 feet. It is known to me also from Washington, British Co- 

 lumbia and Vancouver Island, and from the Cookino Canon, Arizona 

 (Wickham). 



71. B. approxiiliat'liin Lee. — Form moderately broad, slightly depressed ; 

 color uigro-ffiueous or seneous, often tiuged with cupreous, shiniug, the elytra with 

 a subhasal spot, a transverse band in front of and another behind the middle and 

 the apex pale, the above markings often ill-defined, sometinies partially or almost 

 entirely oiiliterated. Head alutaceous, scarcely as wide as the thorax at apex ; 

 palpi piceous ; antennae about one-half as long as the body, piceous. Prothorax sub- 

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

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

 impressions distinct; basal impressions broad, distinctly bistriate ; sides with the 

 margin very narrowly reflexed, moderately arcuate in front, feebly sinuate be- 

 hind ; hind angles subrectangular, strongly carinate. Elytra distinctly wider 

 than the thorax, oblong-ovate, moderately deeply striate ; striae entire, finely 

 punctate to behind the middle, the fifth or seventh grooved at tip ; intervals flati 

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

 about one-third from apex. Beneath black, shining. Legs varying from dark 

 rufous to nearly black. Length .17-. 23 inch ; 4.25-5.7.5 mm. 



A very variable species and one difficult to define. The color 

 varies as indicated above. The thorax is often more or less finely 

 alutaceous, sometimes scarcely perceptibly so. The sides are feebly 

 or sometimes only obsoletely sinuate behind. The elytra vary in the 

 depth of the striae, and the fifth or sometimes the seventh stria is 

 grooved at apex. The color of the legs varies as stated above. 



It is separable from deiitellum by its usually broader, more de- 

 pressed form, with the thorax usually slightly wider as compared 

 with its length, the sides much less distinctly sinuate behind and the 

 hind angles more strongly carinate. The elytra are also more finely 

 striate with the intervals flat. From coloradense it is recognizable 

 by its more depressed form, proportionally narrower thorax, with 

 the sides arcuate for a less distance behind the middle, and by its 

 more shining surface. 



It occurs on the Pacific coast from British Columbia to California 

 and in Nevada and Arizona. I have seen one specimen from as far 

 east as Dacota. 



72. B. Jndistinctuin Dej. — Form rather elongate, slightly convex. Head 



and thorax nigro-ajneous, often slightly tinged with green, shining; elytra seueo- 

 piceous, marked nearly as in approximntiun, the markings usually ill-defined. 

 Head finely alutaceous, as wide as the thorax at apex ; palpi piceous or rufo- 



TRANS. AM. ENT. SOC. XXIV. MARCH, 1897. 



