456 Coleopterological Notices. 



beneath ; abdomen narrowly and more or less distinctly flattened in the middle 

 toward base, the fifth segment not modified. 

 Length 3.^-4.4 mm. ; width 1.5-2.0 mm. 



Wyoming (Cheyenne), Mr. Wickham ; Colorado (Garland), Mr. 

 Schwarz. 



This form is closely allied to vestitus, and in a purely natural 

 sequence of the species the two must be associated together. It 

 differs from vestitus in its much longer, finer pubescence and more 

 strongly dilated anterior tarsi of the male, although even here the 

 peculiar structure of the tarsus, — the second joint being distinctly 

 narrower than the third, — is common to them both. 



The punctuation of the pronotum varies considerably, and in the 

 female from Garland is finer, not so dense toward the sides and 

 without any marked tendency to coalescence. The punctures of the 

 elytral striae are finer than in any other species known to me, being 

 decidedly smaller and more feeble than in vestitus. 



37 B. pimalis Casey. — Cont. Descr. and Syst. Col. N. A., II, Jan. 1885, 

 p. 185. — Oblong-oval, convex, black ; integuments feebly shining ; pubescence 

 rather long and fine, subrecnmbent, rather dense but dark piceous-brown in 

 color and not at all conspicuous. Head moderate, wider than long, two-thirds 

 as wide as the prothorax, deeply and very densely but not coarsely punctate, 

 the basal portion of the occiput abruptly very minutely punctato-scabrous ; 

 upper lobe of eyes moderate, slightly oval ; antenna? moderate, rather slender, 

 the last three joints wider, parallel, forming a loose club, third joint much 

 shorter than the next two. Prothorax about one-half wider than long ; sides 

 feebly convergent from base to apex, distinctly and almost evenly arcuate ; 

 apex broadly, feebly emarginate ; base transverse, broadly and feebly but 

 distinctly sinuate laterally ; basal angles slightly rounded ; disk rather finely, 

 very deeply and densely punctate throughout. Scutellum small, punctate. 

 Elytra about two-thirds longer than wide, fully two and one-half times longer 

 and very slightly wider than the prothorax ; sides parallel and distinctly 

 arcuate, straighter toward base ; disk with fine, feehly impressed stria? of 

 small, rather feeble but distinct punctures, the punctures generally separated 

 by nearly twice their own diameters ; intervals very feebly convex, about five 

 times as wide as the stria?, finely and confusedly granulato-rugulose, minutely 

 and not densely punctate. Abdomen shining, finely and sparsely punctate, 

 the pubescence fine, sparse, pale fulvous and not at all conspicuous. Legs 

 and tarsi moderate. 



Male. — Anterior tarsi very feebly but distinctly dilated, sqnamulose beneath, 

 the intermediate not dilated but with small rounded patches of squamules ; 

 abdomen narrowly and very feebly impressed toward base, the basal segment 

 abruptly very densely punctate in the middle. 



Length 4.6-5.1 mm. ; width l.S-2.2 mm. 



