332 Goleopterological Notices, VII. 



California (Oakland, Alameda Co.). 



The description given above refers to the male, and the female 

 is so different that it might readily be regarded as specifically dis- 

 tinct ; the elytra are not much broader than in the male, but are 

 very strongly convex, with the striae finer and more uneven and 

 the intervals flatter, but the prothorax is relatively very much 

 smaller, feebly dilated anteriorly and fully as long as wide. The 

 sexual characters are nearly as in the preceding species, from 

 which this can be readily distinguished by its short inflated hind 

 body. 



30. B. compositus n. sp. — Eather elongate, moderately ventricose, 

 black, the head and pronotum very dull, the latter without trace of bluish 

 lustre ; elytra polished, the concave side margins with a faint tinge of bluish ; 

 body deep black throughout. Read stout and only slightlj^ elongate, the gense 

 moderately developed, with a small angular notch ; supra-orbital ridges 

 strong; eyes rather large; vertex transversely v^rinkled; antennfe nearly % as 

 long as the body, slender, the basal joint thicker as usual, not as long as the 

 next two, but very much larger than the third. Prothorax relatively rather 

 vrell developed, very slightly wider than long, dilated and broadly rounded 

 anteriorly, subangularly rounded at the middle ; sides strongly sinuate pos- 

 teriorly, becoming parallel and straight in basal sixth ; angles right ; base 

 broad, somewhat exceeding }4. ^^^ maximum width and wider than the head ; 

 disk feebly convex, finely, unevenly rugulose in a generally transverse direc- 

 tion, the impressions distinct, the reflexed margins rather strong. Elytra 

 evenly elliptical, not very full and broadly, obliquely rounded at the humeri, 

 % longer than wide, 3 times as long as the prothorax and about 275 times as 

 wide ; reflexed margins distinct and more coarsely punctured ; disk moderately 

 convex, strongly striate, the strise broadly impressed and rather coarsely but 

 somewhat unevenly punctured, the intervals convex, occasionally subinter- 

 rupted internally and much broken up broadly toward the sides. Lengtb 

 17.0 mm. ; width 7.6 mm. 



California (locality not recorded). 



This species is quite distinct from any of the preceding in the 

 more opaque and rugulose and duller pronotum, with the base 

 relatively much wider, and in having the spongy-pubescent sole 

 of the first tarsal joint in the male more extended, occupying 

 nearly apical half. The intercoxal plate of the mesosternum is- 

 deeply concave anteriorly, near the narrowed anterior prolonga- 

 tion. A single specimen. 



31. B. f lllleri Horn— Trans. Am. Ent. Soc, VII, 1878, p. 179. 



This species is said to resemble marginatus somewhat in form' 

 and in the obliquity of the sides of the prothorax posteriorly, but 



