24 MEMOIRS ON THE COLEOPTERA 



punctate, much more strongly than in the preceding or americanus, 

 the metasternum coarsely, densely and rugosely punctate, with a 

 somewhat impressed and partially impunctate post-central area 

 on the median line. Length 7.8-8.4 mm.; width 4.8-5.25 mm. 

 Illinois and Lake Superior (Bayfield). [B. geminatus Lee., Proc. 

 Acad. Phil., 1854, p. 114] geminatus Lee. 



Color less deep black, somewhat picescent beneath, smaller in size and 

 more broadly oblong-oval, more acute anteriorly, the head notably 

 smaller, strongly, extremely densely punctate throughout, the im- 

 pressed transverse line but feebly indicated as a less punctate streak, 

 the pale spots well developed, cuneiform; pubescence very short, in- 

 conspicuous; prothorax unusually small, much less than half as long 

 as the basal width, the very converging sides almost straight; surface 

 finely, evenly and extremely closely punctate throughout, the ves- 

 titure not long but rather shaggy, black, much variegated with 

 fulvous; elytra barely a fourth longer than wide, distinctly wider 

 than any part of the prothorax, very obtusely ogival or parabolic at 

 apex, densely and finely chagrined, the elongate condensations of 

 black hairs on the alternate intervals widely separated and few in 

 number, without indication of the black spot of geminatus, the trans- 

 verse bands very irregular and formed of fulvous hairs; abdomen 

 very finely, rather closely but feebly asperate, the metasternum 

 rather less coarsely punctured than usual and very densely through- 

 out, a very fine entire median line and the extreme posterior inter- 

 coxal angle alone smooth. Length 7.3 mm.; width 4. 3 mm. Oregon. 



perditus n. sp. 



Color deep black, the abdomen feebly picescent and the tarsi piceo- 

 testaceous; antennae wholly piceo-testaceous, short, the seventh 

 joint but little wider than long, eight to ten transverse; form elongate- 

 oval, convex, the head rather small, convex, deeply, densely punctate, 

 with a fine transverse polished frontal line, the spots posterior thereto 

 not distinct, the vestiture short, dense; prothorax a little less than 

 twice as wide as long, the strongly converging sides feebly arcuate, 

 the punctures fine, deep and close, the fine interstices shining; pubes- 

 cence moderately long, dense, black, with a conspicuous design of 

 fine pallid lines; scutellum densely nigro pubescent; elytra fully a 

 fourth longer than wide, parallel and feebly arcuate at the sides, 

 evenly and broadly rounding conjointly in about apical third, very 

 minutely, densely sculptured, but feebly shining, the coarse vestiture 

 mostly black, with blacker condensations on the alternate intervals 

 and sprinkled with silvery laterally, the anterior transverse pale 

 band prominently rounded anteriorly at the suture; under surface 

 densely sculptured throughout, the abdomen finely, rather closely 

 and moderately strongly asperate and with numerous hairs which 

 are fine and rather obscure in coloration. Length 6.8-7.0 mm.; 

 width 3.9-4.0 mm. Manitoba (Aweme), Norman Criddle. 



criddlei n. sp. 



Color dark piceous, the legs paler, piceo-rufous, the antenna? entirely 

 rather pale piceo-testaceous, except the blackish basal joint; form 

 much more elongate, narrower and more parallel than in geminitus 



