THE CANADIAN ENTOMOLOGIST. 353 



Ips pilifrons, n. sp — Length, 43/2~5mm.; width, IJ^mm. Larger 

 and stouter than pini, with the sutures more strongly angled, the 

 elytral striae impressed, the elytral interspaces punctured, the front 

 with a dense mass of short hairs, and the declivital armature of 

 the pini type. Color, dark reddish to nearly black. 



The front of the female is convex, granulate above and in 

 front of the eyes, punctured on the sides, with a swollen area in 

 front presenting a flat, oblique, anterior surface, which is covered 

 with a circular, dense mass of short, yellow or brownish hairs. 

 The front of the male has the pubescent area of the female replaced 

 by a convex densely granulated area, moderately pubescent, with 

 long yellowish hairs. The antennal club has the first suture 

 bisinuate, the second sharply angled in front, not prolonged, the 

 third suture angled but often indistinct, and the sutures strongly 

 recurved at the sides. 



The pronotum is shorter than the elytra, 2: 2I/2; longer than 

 wide, 2:1%; broadly rounded behind; slightly rounded on the sides, 

 and gradually narrowed cephalad or subparallel for over three- 

 fourths the length, then rapidly narrowed and rounded in front; 

 with the disc rather coarsely roughened in front; coarsely and 

 deeply punctured behind, but not very densely except on the sides, 

 and clothed with light slender hairs on the sides and in front. 



The scutellum is very small and distinctly channelled. The 

 elytra are punctate-striate, with the striae distinctly impressed and 

 wider on the disc; the punctures of the discal striae large, deep, 

 subquadrate, and usually closely placed; the punctures of the 

 lateral striae usually distinctly smaller than those of the disc, and 

 near the lateral margin sometimes easily confused with those of the 

 interspaces, which are there small, numerous, and irregular; the 

 suturai striae deep, variably widened towards the declivity; the 

 interspaces convex, with setigerous punctures, smaller than those 

 of the striae, usually extending from the base to the declivity; the 

 punctures of the first two interspaces rather closely placed ; those 

 of the third, fourth and fifth more distant, except near the de- 

 clivity; the first two interspaces with granules which become much 

 larger near the declivity, with smaller granules intermixed; the 

 remaining interspaces from the sixth outward confusedly punc- 

 tured and granulate at the declivital margin. The declivity is 

 deeply excavated, coarsely and confusedly punctured, not pubes- 

 cent, with the suturai interspaces raised and the elytra dehiscent 

 at the tip. The declivital teeth are coarser than in pini, and the 

 acute apical margin is usually more strongly produced. The elytra 

 are clothed with light, soft hairs, rather dense along the sides, 

 around the margin of the declivity, along the base and along the 

 suture, but sparse on the central areas of the elytra. 



The type is from the Cornell University Collection. Colorado; 9 . 



