176 AMERICAN COLEOPTERA. 



B. ochraceus Schf. 



This species is described by its author as being clothed 

 with uniform pale yellowish pubescence. A specimen kindly 

 sent me for examination shows faint but unmistakable traces 

 of three lateral darker areas on the elytra, becoming gradu- 

 ally evanescent inwardly. Examples in my collection from 

 Columbus, Texas, which I think are unquestionably identical 

 show the markings more clearly, and in one large female 

 with the derm of darker shade, the elytral pubescence is 

 sharply and distinctly tessellate with pale yellow and brown. 

 In consequence of this evident variability in color I have 

 tabulated the species in two positions. The relative lengths 

 and widths of the prothorax and elytra are quite inexact as 

 given in the description, the longer dimension being over- 

 estimated in each instance. In the specimen at hand the 

 prothorax is but slightly over one-fourth wider than long, 

 and the elytra are two-fifths longer than the basal width. 



B. collusus n. sp. 



Form nearly as in aureolus and pauperculus. Piceous, elytra pale 

 rufotestaceous, the prothorax varying to dark rufous or rufo-piceous, 

 the elytra sometimes with the suture narrowly blackish, humeral 

 callus blackish at summit. Pubescence pale ochreous, moderately 

 dense, not or but feebly variegated. Antennas piceous, basal four 

 joints pale, not very strongly incrassate, the outer joints distinctly 

 transverse and feebly subserrate. Eyes not very prominent, separated 

 on the front by a distance which is barely equal to their own width. 

 Front not carinate, finely punctate ; occiput more closely and less finely 

 punctate. Prothorax conical, a little wider than long, sides slightly 

 sinuate behind and a little rounded anteriorly ; surface with moder- 

 ately numerous coarse punctures. Elytra a little widened behind, 

 finely striate, intervals minutely subrugosely punctate. Pygidium dis- 

 tinctly rather closely punctate. Legs pale rufotestaceous, the last two 

 tarsal joints blackish, the extreme apex of the hind tibiae and base 

 of hind femora sometimes blackish. Hind thighs moderately stout, 

 armed with a tooth and two small denticles. Apical spur of hind tibia 

 less than one-fourth as long as the first tarsal joint. Lenth, 1.8-2.5 

 mm. ; width, 1.1-1.4 mm. 



The pubescence is rather dense on the prothorax and pygi- 

 dium, slightly less so on the elytra, where the surface color 

 becomes somewhat more evident. In some specimens there 

 is a slight trace of a paler line at the middle of the third 



