286 Natural History Bulletin. 



B. CANADENSIS, Brcudcl. Piceous-brown or piceous-black, 

 pubescence moderately long, recumbent. Elytra sanguineous. 

 Legfs and antennas ferruginous. 



Head as long as wide, the eyes excluded, punctured, more 

 strongly at the sides behind the tempora, the later convergent, 

 little longer than the eyes, feebly arcuate; foveje large, equal 

 in size, the posterior ones mutually three times as distant as 

 either from the eye; antennal tubercles prominent, with a few 

 coarse punctures; frontal margin convex, the space between 

 the antennal tubercles concave, bearing the frontal fovea, and 

 here more conspicuously pubescent; eyes coarsely facetted, 

 b}^ their own length distant from the frontal margin. Anten- 

 ncB from the first to the eighth joint sub-cylindrical, decreas- 

 ing gradually in length and thickness, except the fifth, which 

 is a little longer than its neighbors; the eighth smallest, quad- 

 rate. Prothorax uniformly very conspicuously and deeply 

 punctured, one-third broader than long, widest in the middle, 

 where it is strongly arcuate, from there to the anterior and 

 basal margin straight; anterior margin one-half the length of 

 the base; middle fovea nude, about double as large as the 

 discal punctures; lateral fovea large, fully visible from above 

 and situated with the anterior margin just behind the middle; 

 the base is garnitured with oblong punctures. Elytra across 

 the shoulders as broad as the prothorax, sides arcuate, diverg- 

 ing, suture one and one-half times as long as the prothorax 

 and three-fourths as long as the width across the tip; disk 

 strongly punctured, all the impressed lines entire, the sutural 

 ones arcuate near the tip and finely punctured, the discal lines 

 convergent toward the tip; basal fove?e three, large, the 

 sutural one farther from the base than the middle one. Abdo- 

 men moderately convex, more feebly punctured, the pubes- 

 cence as long as on the elytra, first segment as long as one- 

 third its width, the lateral refiexed margin not broader and 

 the lateral basal impression much larger than in B. riibictmda^ 

 the basal stria? strongly divergent more than half as long as 

 the segment, including at base a space not broader than the 



