292 Natural History Bulletin. 



eyes; anlennal tubercles somewhat oblique, the space between 

 them depressed. AntemicB as long as the head and prothorax, 

 first and second joints obconical, nearly equal, third to seventh 

 cyhndrical, the fifth longer in the male; seventh quadrate, 

 eighth, ninth and tenth gradually larger, obconical, the last 

 ovate, truncate at the base, as long as the two preceding, two- 

 thirds as wide as long. Prothorax very denselv covered with 

 coarse, deep punctures, lustreless, broadest in the middle, 

 wider than the head and eyes; base one-half wider than the 

 neck, sides sharply rounded in the middle, sinuate anteriorly, 

 nearly straight behind. Disk convex, the lateral fove« large, 

 not in full view from above, basal fovece small, but very con- 

 spicuous. Elytra similar to those of B. -polita^ polished, as 

 wide across the prominent shoulders as the prothorax, across 

 the tip slightly less than one-half wider, and the suture exceed- 

 ing by one-fifth the breadth of the prothorax. Disk convex, 

 depressed outside of a line drawn from each shoulder to the 

 outer third of the tip of each elytron. Sutural lines not 

 straight, interval roof-shaped, discal lines more widely sep- 

 arated near the shoulders, then convergent or parallel, with a 

 short divergence near the tip. Basal punctures three, approx- 

 imate. Abdomen short, narrower than the tips of the elytra, 

 the carina including one-fifth of the surface, shghtly divergent. 

 Legs simple, slender, i with the intermediate coxae acute, 

 last ventral with the usual impression. 



Varies in the color of the elytra, which are reddish-brown 

 in some (probably immature) specimens. 



Habitat. Sea-coast of the Northern Atlantic States. 

 Region of the Great Lakes. 



B. CONGENER, BrciideL Pale brownish-yellow throughout, 

 impunctate, lustreless (on account of the short, appressed, 

 tomentose pubescence). Abdominal carinae divergent, very 

 short, including one-sixth of the basal width. Length, i.i 

 mm. Plate IX., Fig. 61. 



Head with the occipital fovea; circular, separated from the 

 eyes by a distance equal to their own width, and mutually 



