450 Coleopterological Notices, VI. 



the sculpture uot beiug imbricate but finel}' and subtransversely 

 reticulate. The antennre are unusually short. The two speci- 

 mens before me are females. 



TR0C10PHL<El S Mann. 



The species allied to Hmplariiis constitute a small group in 

 which the sexual differences in bodily form and habitus become 

 extreme, the male being verj- much stouter than the female and 

 with the head and prothorax conspicuousl}- larger. The three 

 known to me maj'^ be distinguished as follows by the males : — 



Eyes large, at much less than their own length from the prothorax; pronotum 

 finely and extremely densely punctate, with a very narrow impunctate 

 median line. 



Sides of the prothorax parallel in apical half siiuplarius Lee. 



Sides of the prothorax convergent from the middle to the apex {falla.v Csy. 9 ) 



pallidiiliis Csy. 

 Eyes small, at their own length from the base; pronotum finely and sparsely 

 punctate toward the middle, with a broad impunctate median area. 



salicola n. sp. 



The eyes are of about the same size in both sexes, and are 

 therefore larger in proportion to the size of the head in the female 

 than in the male. The inner apical angles of the el34ra are nar- 

 rowl}^ rounded. 



T. salicola. — Very stout, parallel, rather convex, somewdiat shining, 

 deep black throughout; autenuiB piceous; legs black, the tibise toward base and 

 apex and tarsi paler; pubescence fine, very short and dense but dark in color 

 and only moderately conspicuous. i7i?r((/ triangular, as wide as long, impressed 

 within the antennal prominences, finely punctate, sparsely so toward the mid- 

 dle, more densely scabro-reticulate and dull toAvard the sides; antenna? moder- 

 ate in length, the second Joint as long as the next two; basal joint elongate 

 and contorted. Prothorax distinctly wider than the head, two-fifths wider 

 than long, the sides subparallel and feebly arcuate in apical half, strongly con- 

 vergent from the middle to the base, the latter scarcely more than two-thirds 

 as wide as the ajiex, wliich is broadly, evenly arcuate; disk almost even, with 

 scarcely a trace of impressions. Elytra distinctly wider than long, two-fifths 

 longer and a little wider than the prothorax, impressed at each side of the 

 suture toward base, finely, closely punctate and somewhat scabriculate. Ab- 

 domen slightly narrower than the elytra, the sides parallel and feeljly arcuate, 

 the surface coarsely aud strongly reticulate, finely, not densely punctate and 

 clothed moderately densely with longer and stiffer pubescence. Length 2.8 

 mm. ; width 0.7-0.8 mm. 



Utah (Great Salt Lake). Hubbard and Schwarz, 



