C'oleoj^terological Notices, VII. 331 



thorax, which is here as long as Tvide and apparently a little longer, dilated 

 and rounded anteriorly, distinctly angulate before the middle, the sides 

 thence strongly oblique and sinuate to the base but not becoming parallel, 

 the angles a little more than right and rather blunt; base narrow, barely % 

 the maximum width and about as wide as the head. Elytra elliptical, nearly 

 % longer than wide, not quite 3 times as long as the prothorax and 2,^3 times 

 as wide, rather full at the humeri, the sides becoming very feebly arcuate 

 thence to the apical obliquity; disk sculptured nearly as in sinuatus but rather 

 less convex, especially toward base, the intervals more even and much less 

 interrupted toward the suture. Length 13.5 mm. ; width 5.8 mm. 



California (Hoopa Valley, Hnmboldfc Co.). 



The papillae on the under surface of the anterior tarsi in the 

 single male before me are verj^ coarse, and the pad of the first 

 joint scarcely occupies more than apical third ; there do not seem 

 to be any papillse on the fourth joint, but, as usual, the stiff setge 

 are longer and more numerous. 



This species is differentiated from sinuatus by a number of 

 characters relating to general habitus, such as smaller size, less 

 ventricose form, more flattened and less strongl}^ sculptured 

 elytra and somewhat differently shaped prothorax ; extended 

 series would probably prove them mutually distinct at a glance, 

 but having a single specimen only, I have hesitated some time be- 

 fore separating politus and giving it a specific status. 



29. B. corpulentus n. sp. — Short, stout and strongly ventricose, black, 

 strongly shining, the pronotum only very slightly alutaceous, faintly viola- 

 ceous toward the sides, the elytra also violaceous in the reflexed lateral margin. 

 Head only slightly elongated, the vertex very feebly, transversely wrinkled; 

 gense feebly developed, with a moderately large angular notch; supra-orbital 

 ridges fine posteriorly; antennae slender, scarcely % as long as the body, 

 slightly thickened toward base, the first joint dilated as usual, much shorter 

 than the next two but longer than the third. Prothorax relatively well devel- 

 oped, short, much dilated and rounded anteriorly, distinctly wider than long, 

 the sides very strongly oblique and feebly arcuate behind the middle to the 

 sinuation, which is strong and abrupt, becoming straight and parallel in a 

 little more than basal sixth; angles right; base narrow, less than ^2 ^^^ maxi- 

 mum width and slightly narrower than the head ; disk quite distinctly longi- 

 tudinally convex, the impressions distinct; lateral margins rather deep and 

 strongly reflexed. Elytra short and broadly elliptical, rather full at the 

 humeri, less than % longer than wide, not quite 3 times as long as the pro- 

 thorax and but little more than twice as wide; margins rather widely reflexed 

 toward base and with coarser punctures; disk moderately convex, with rather 

 ooarse and impressed striae, becoming very coarse and irregular laterally, the 

 striae not very coarsely but distinctly punctured, the intervals convex, re- 

 motely subinterrupted, becoming narrow, irregular and more broken up later- 

 ally. Length 12.7-14.7 mm. ; width 6.0-7.0 mm. 



