Coleopterological Notices, IV. 415 



half as wide as the base. Elytra three-fifths longer than wide, 

 scarcely wider than the disk Of the prothorax in the male but dis- 

 tinctly wider in the female, the sides subparallel in basal three- 

 fifths ; intervals without median line of squamules, the hairs of the 

 strial punctures white and quite evident. Length 2.6-3.Y mm. ; 

 width 1.15-1.1 mm. 



Colorado and Montana. Numerous specimens. In one female, 

 not otherwise differing, the beak is deformed, the apical parts being 

 swollen polished and impunctate, separated from the post-antennal 

 portion by a broad depression. The same deformity exists to a less 

 marked degree in a male specimen, and the species seems to be 

 peculiarly liable to this kind of rostal malformation. An extremely 

 feeble transverse impression at the antennae is however apparently 

 normal in some species, such as aratus Say. 



4 T. arator Gyll.— Sch. Cure, III, p. 414; Lee. : Proc. Am. Phil. Soc , 



XV, p. 216. 



Oblong-oval ; rather stout, convex, black, the legs piceous ; an- 

 tennae and apical parts of the beak rufo-testaceous ; body very 

 densely clothed throughout with elongate dark ochreous scales, 

 which are coarsely strigose, but intermixed with a few larger ones, 

 toward the apex of the elytra, which are non-strigose in structure 

 and rather paler in color ; intervals of the elytra without setae, the 

 strial squamules distinct. Beak thick, tumid, densely punctured 

 and squainulose behind, but very thin, glabrous, shining and 

 sparsely punctured before, the point of antennal insertion, feebly 

 arcuate, the thin apical portion straight, rather shorter than the 

 prothorax in both sexes but a little longer in the female than in the 

 male, the antennae inserted at the middle in the former and at 

 apical two-fifths in the latter, with the basal joint of the funicle as 

 long as the next two, the second two-thirds as long as the first. 

 Prothorax two-fifths wider than long, the apex much less than 

 one-half as wide as the base. Elytra distinctly wider than the pro- 

 thorax in both sexes, one-half longer than wide. Length 3.0-3.6 

 mm. ; width 1.4-1. 1 mm. 



Texas (Dallas) — Mr. Wickham ; Illinois — Cab. LeConte. This 

 species is very isolated in all of its characters, and cannot be com- 

 pared with any other known to me. The hind femora are feebly 

 toothed beneath. 



