NORTH AMERICAN COLEOPTERA. 221 



picipes Cas. On the west coast it is replaced by Orus, hav- 

 ing a much wider neck and a distinctly different system of 

 punctuation ; this appears to extend down the western slope 

 of the continent, also to Central America, where it is repre- 

 sented by a species recently described by Dr. Sharp from 

 Guatemala, 



Leptorus is probably a large genus, and the several 

 forms, which are often closely allied, should be described 

 with great care and constant attention to details if they 

 are to be even approximately identified by future reviewers. 

 ■ In addition to the characters pointed out in the preced- 

 ing table, it should be stated that the eyes are situated just 

 before the middle, on the sides of the head; they are strong- 

 ly, longitudinally oval, very coarsely granulated, and have 

 on their upper edge in the middle a large, rather shallow, 

 spongiose fovea bearing a single very long seta. 



In Orus the eyes are larger, less coarsely granulated, 

 more broadly oval, and have near the upper border, and in 

 a transverse line with the posterior margin, a small, deep, 

 setigerous puncture which is entirely nude. The puncture 

 in this case, though very near the eye, is entirely disengaged 

 from it, while in Leptorus the fovea, which is of an entirely 

 different structure, intrudes slightly upon the continuity of 

 the edge. 



L. texanus n. sp. — Slender; sides parallel; moderately depressed; pale 

 rufo-testaceous, elytra clouded with piceous toward base; abdomen piceous, 

 very slightly paler toward tip; antenufe testaceous throughout; legs pal>^ 

 flavate; pubescence excessively fine and short, dense except on the pronotuni 

 where it is sparse; integuments alutaeeous, except the pronotum which is 

 polished. Head slightly longer than wide; sides parallel, very feebly arcu- 

 ate behind the eyes; base transversely truncate; angles narrowly rounded; 

 surface transversely and rather strongly convex, excessively minutely and 

 densely punctate; punctures impressed, deep, slightly sparser along the 

 middle; eyes rather prominent, at twice their length from the base; antenrue 

 slightly shorter than the head and prothorax together, basal joint slightly 

 longer than the next two combined, second slightly longer and more robust 

 than the third, joints four to ten decreasing distinctly in length, the former 



16— Bull. Cal. Acad. Sci. II. 6. Issued November 27, 1886. 



