100 AMERICAN COLEOPTERA. 



piceous; anteunfe about one-half the. length of the body, piceous or dark fuscous, 

 the basal joints slightly paler. Prothorax subquadrate, about one-half wider 

 than long, as wide at base as apes, scarcely rugose at base; apex nearly truncate; 

 median line distinct, abbreviated at each end ; transverse impressions moderately 

 distinct; basal impressions broad, deep, bistriate; sides with the margin very 

 narrowly reflexed, moderately arcuate in front, not sinuate behind or at most 

 obsoletely so in front of the hind angles, which are subobtuse. but not rounded 

 and finely cariuate. Elytra slightly wider than the thorax, oblong-ovate, finely 

 striate ; strife entire, finely punctate to behind the middle, the seventh slightly 

 grooved at tip: intei-vals flat, the third with the first dorsal puncture about one- 

 third from base, the second about one-third from apex. Beneath black, shining. 

 Legs rufous or rufo-testaceous. Length .15-.20 inch ; 3.75-5 mm. 



Closely allied to approximatitin, but distinct by its more elongate 

 and more convex form, proportionally narrower thorax, the sides 

 of which are moderately arcuate nearly to base and at most obso- 

 letely sinuate in front of the hind angles, which are subobtuse and 

 finely carinate. It is subject to less variation than in the latter 

 species. 



It occurs along the Pacific coast from California to British Co- 

 lumbia. 



73. B. versntum Lee. — Form moderately broad, slightly convex; color 

 brown-bronze, the head and thorax subopaque, the elytra testaceous, with bronze 

 markings arranged somewhat as in cordatum. but broader and not clearly defined. 

 Head densely alutaceous, as wide as the thorax at apex; palpi rufo-piceous; an- 

 tennse about cue-half as long as the body, piceous, the basal joints more or less 

 rufous. Prothorax subquadrate, about one-half wider than long, as wide at base 

 as apex, alutaceous, somewhat less densely so on the disc, rugose at base; apex 

 nearly truncate; median line distinct, abbreviated before and behind; trans- 

 verse impressions rather feeble, especially the anterior; basal impressions moder- 

 ately deep, bistriate ; sides with the margin very narrowly reflexed, arcuate in 

 front, sinuate behind ; hind angles rectangular, carinate. Elytra about one-half 

 wider than the thorax, oblong-ovate, moderately finely striate; stride entire, dis- 

 tinctly punctate to behind the middle, the fifth slightly grooved at tip ; intervals 

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

 about one-third from apex. Beneath nearly black, shining. Legs rufo-testace- 

 ous. Length .17-. 19 inch ; 4.25-4.75 mm. 



This species seems to lead from indidinctam and its allies towards 

 dorsale, variolosum, etc. It is most nearly allied to the first-named 

 species, but differs by the more strongly alutaceous head and thorax, 

 the latter with the sides distinctly sinuate behind and the hind angles 

 rectangular, and by the more deeply striate elytra, as well as by its 

 distinctly brown-bronze color. The form is also broader and slightly 

 less convex, and the elytra are wider as compared with the thorax. 



It is known to me from New Hampshire, Massachusetts (Lowell, 

 Chicopee), Marquette, Mich., and Bayfield, Wis. (Wickham). 



