440 Coleopterological Notices. 



The wings are not so rudimentary as in its allies or pulverulentus , 

 being' rather wide, subhyaline, with two strong discal veins; they 

 arc fully one-half longer than the prothorax and two-thirds as long 

 as the elytra. 



1!) B. crassicorilis n. sp. — Oblong, the sides nearly parallel, rather 

 robust, moderately convex, somewhat dull in lustre, black ; legs dark rufous ; 

 pubescence short, rather abundant but dark fulvo-cinereous in color and not 

 at all conspicuous. Head strongly transverse, feebly convex, deeply punctate, 

 the punctures very dense, somewhat sparser and coarser toward the middle ; 

 upper lobe of eyes small ; epistoma distinctly but moderately sinuate ; antennae 

 unusually robust, the three last joints much wider and forming a strong loose 

 club, third joint rather long, nearly as long as the next two combined, eighth 

 distinctly wider than the seventh and wider than long, tenth rather wider 

 than either the ninth or eleventh. Prothorax rather elongate, scarcely one- 

 half wider than long, the apex but slightly narrower than the base; sides 

 feebly arcuate, rather more strongly so in the middle and nearly straight 

 toward base, the latter transverse, the sinuations moderate ; basal angles not 

 at all rounded : disk deeply, moderately coarsely and very densely punctate 

 throughout, the punctures not decidedly coalescent laterally. Scutellum 

 moderate, almost confluently punctured. Elytra subequal in width to the 

 prothorax and two and one-half times as long, the sides very feebly areiiate, 

 rather broadly, parabolically rounded behind ; disk finely striate, the striae 

 rather widely feebly impressed, a little more strongly so externally and near 

 the suture, very finely, approximately punctate ; intervals very slightly 

 convex, minutely, sparsely punctate. Abdomen shining, finely but not very 

 sparsely punctate, the pubescence short, very fine, dark brownish in color and 

 not at all conspicuous. Legs moderately robust. 



Mule. — Anterior tarsi strongly, the intermediate moderately, dilated, the 

 second joint of the former longer and also somewhat wider than the third 

 which is deeply emarginate ; both pairs densely spongiose beneath ; abdomen 

 rather broadly, feebly impressed in the middle toward base, with the punc- 

 tures narrowly denser along the middle of the first segment. 



Length 5.(j mm. ; width 2.3-2.4 mm. 



Nevada (Reno). 



Moderately abundant near the Truckee River. I was at first 

 inclined to regard this as identical with rvfipes, but more careful 

 study convinced me that they cannot be associated together. The 

 present species differs in its much finer, shorter abdominal pubes- 

 cence, rather longer legs, in the fact that the male and female are 

 nearly similar in form and size, and in the form of the wings which 

 are nearly as in inquisitus, very slender and elongate, although 

 decidedly less than one-half as long as the elytra. 



The antennae are distinctly more robust and, especially, with a 



