101 



applying Mannerheim's name to the larger specimens from Queen Charlotte 

 Islands and uniting atratulus and puncticollis under the former name for 

 the southern smaller specimens in our collection. 



Host tree. — Sitka Spruce. 



Distribution. — Alaska and southward. 



Pityophthorus atratulus Lee; Am. Ent. Soc. Trans., 2: 156 (Cryphalus), 



1868; puncticollis Lee; Am. Ent. Soc. Trans., 5: 71, 1874. 



Host trees. — Pines and Spruce. 



Distribution. — Southern British Columbia and southwards to Cali- 

 fornia. 



Pityophthorus confinis Lee; Am. Phil. Soc. Proc. 15: 354, 1876. 



Length, 3 mm.; width, 1-1 mm.; piceous; coarsely, confusedly sculp- 

 tured, the pubescence sparse and fine on the sides, almost invisible on the 

 disc; a female. 



The front is densely, deepl}^, rather coarsely punctured above with a 

 flattened, somewhat semicircular area in front, densely, finely punctured 

 and clothed with long reddish-yellow hair; the antennal club nearly as 

 wide as long, the segments subequal, the last shorter, the sutures arcuate. 

 The pronotum is about as wide as long, the sides straight and parallel on 

 more than the caudal half, then constricted and broadly rounded in front; 

 the front margin moderately serrate; the asperities of the cephalic half 

 moderate in size and subconcentric ; closely punctured behind; more coarsely 

 on the disc, with a smooth median line; very strongly margined behind; 

 the disc transversely impressed behind the summit. The elytra have the 

 sides nearly straight and subparallel, moderately narrowed and broadly 

 rounded behind; the punctuation coarse, close, and deep, decidedly confused 

 on the disc, with the surface strongly roughened, the punctures much smaller 

 behind near the declivity, smaller on the sides and less thoroughly confused; 

 the declivity broadly and rather strongly sulcate, with the sulcus shining, 

 the suture feebly elevated and finely granulate; the lateral convexities each 

 with two rows of fine granules and fine setse. The male has the front 

 convex, coarsely closely punctured, impressed and more finely punctured 

 on the epistoma, almost glabrous, with a strongly developed, longitudinal, 

 acute, median carina, less elevated on the epistoma, and the declivity 

 rather more deeply sulcate. 



Host trees. — Western Yellow Pine, Sugar Pine, Jeffrey's Pine. 



Distribution. — California. 



Two entirely distinct undescribed species, closely allied to confinis, are 

 represented in our collection from New Mexico. 



Pityophthorus torreyanse, n. sp. 



Length, 2-5 mm.; width, 1 mm.; piceous, the punctuation close, of 

 medium size; the declivity broadlj'^ sulcate; the pubescence rather abundant 

 on the sides; smaller and slightly more slender than confinis; a female. 



The front has a wide, subcircular area rather strongly concave, closely, 

 finely punctured and thickly clothed with long, slender, yellow hairs. The 

 pronotum very little longer than wide; the sides subregularly narrowed from 

 the base to the rather narrowly rounded apex, only faintly constricted in 

 front of the middle; the front margin rather feebly serrate, the median 

 teeth longer; the asperities of the cephalic half rather small, irregular and 



