AMERICAN COMPONENTS OF THE TENTYRIIN.'E 455 



12 — Form somewhat elongate-oval, very convex, moderately dull in 

 lustre, black, the vestiture cinereous, the erect hairs long and 

 numerous, the shorter equally numerous, without any very evi- 

 dent serial arrangement on the elytra ; head not very coarsely, 

 sparsely punctured throughout, the punctures not denser but with 

 the surface feebly rugose laterally ; second antennal joint but little 

 longer than the fourth though thicker, abruptly constricted or 

 pedunculate at base ; prothorax of the usual form but only a little 

 more than three times as wide as its inedian length, sparsely and 

 moderately coarsely punctured, the punctures very coarse and 

 densely crowded laterally ; elytra distinctly elongate-oval, not quite 

 six times as long as the prothorax — on its median line as usual, — 

 and very nearly one-half wider, ver}' coarsely and deeply punc- 

 tured, the punctures more perforate than in the two preceding 

 species and separated by about twice their own widths, the inter- 

 spaces sparsely strewn with punctures which are about half as 

 wide as the others ; under surface punctured as usual. Length 

 7.5 mm.; width 4.73 mm. Arizona intermixtus n. sp. 



Form and coloration as in intermixtus^ the lustre generally rather 

 dull, the vestiture dark cinereous in color, rather shorter and 

 sparser than in intermixtus and less conspicuous, not serial on 

 the elytra; head smaller than usual, finely and sparsely punc- 

 tured throughout, the second antennal joint equal in length to the 

 fourth but thicker, constricted at base ; prothorax as in the 

 preceding species but less transverse, scarcely more than three 

 times as wide as its median length, rather coarsely, sparsely but 

 muricately punctate, gradually becoming extremely coarsely, 

 densely so laterally; elytra evidently elongate, elliptical, between 

 five and six times as long as the prothorax and nearly one-half 

 wider, punctured as in intermixtus but less coarsely and with 

 fewer or no intermingled smaller punctures, the punctures each 

 with the attached granule somewhat larger than usual in this sec- 

 tion; abdomen coarsely but rather sparsely punctured. Length 

 5,9-7.0 mm. ; width 3.6-4.3 mm. New Mexico (Magdalena), 

 — F. H. Snow oblongulus n. sp. 



Form rather less elongate than in the two preceding, strongly convex, 

 black, polished though generally dull by reason of the incrusting 

 indument, plentifully clothed with long, bristling, unusually 

 coarse and conspicuous flavo-cinereous hairs, the shorter not 

 numerous, the vestiture arranged in rather distinct broad lines on 

 the elytra ; head larger than in oblo7igulus^ subequal in width to 

 an elytron, rather finely, very sparsely and subevenly punctate, 

 the superciliary ridge pronounced; second antennal joint not 

 quite as long as the fourth but thick, constricted at base, much 

 shorter than the third; prothorax of the usual form, fully tour 

 times as wide as the median length, rather coarsely, somewhat 

 sparsely punctate, very coarsely and densely so laterally; elytra 

 only very slightly elongate, oval, nearly six times as long as the 



