278 THE CANADIAN ENTOMOLOGIST. 



PITYOPHTHORUS. 



P. mi?iutissimus, Zimm. $ = description. $ = description. 



P. confinis (?), Lee. $ = description of $ . $ = description of $ . 



P. (?) plagiatus, Lee. $ = description of $ in synopsis of the Scoly- 



tidfe by Zimmerman, and of ? in Rhyncliophora by LeConte. 



9 = description of $ (Zimm.) and of $, (LeConte). 



XYLOTERUS. 



X. rettisus,'Ltc. ^| = description. 5 new. Head convex in front and 



roughened with minute granules, and with a small depression in 



the centre. 

 X. bivittatus, Kirby. $ and ? = descriptions. 



X. (?) {unicolor, Eichh.) polihis, Say. $ new. Hind tibia narrower. 



Anterior edge crooked and near the tip thickly clothed with long, 



silky hairs with incurving points. Tarsus with fine hairs curved at 



the points. $ new characters. Hind tibia broader. Anterior edge 



straight, with a itw straight bristles. Tarsus with short, straight hairs. 



The male of this species was unknown to Mr. Eichhoff when I 



examined his collection in 1892, as he remarked to me at the time that of 



the large series of examples he had examined from North America, he 



had failed to recognize a male. He also admitted that his unicolor was 



evidently the same as Say's politus. 



The difference in the antennal club, as suggested by LeConte, and the 



remarkable male character, together with some other differences, demand, 



I think, that this species should have a distinct genus erected for it. 



XYLEBORUS. 



X. dispar, Fab. (^ and 9 = descriptions. 



X. obesus, Lee. ^ new (?). Length, 2 mm. Width, 1.4 mm. ; similar 

 in form to $ X. dispar, but smaller. Thorax does not project over 

 the head. Head smooth. Elytra distinctly punctured, but not in 

 rows, especially on the side. $ = description. 



X. xylographtis, Say. $ new (?). Length, 2 mm. Width, .6 mm. 

 More cylindrical than ^ of X. ptibescens. Head punctured in front. 

 Thorax projecting over the head, the anterior portion being slightly 

 rugose, posterior portion smooth. Elytra shining, finely punctured, 

 and with a few granules on the declivity. Body sparsely covered 

 with long, fine hairs. 5 = description. 

 I believe this species to be identical with saxesejiii, Ratz. I can see 



