﻿Two New Bark-heetles from Colorado 139 



the punctures nearly as large as those of the striae but very sparse. 

 Declivity strongly suleate with the punctures of striae 1 and 2, 

 especially the latter, obsolescent ; the suture rather wide and 

 strongly elevated with a row of very fine granules; the sulcus 

 smooth, sub-opaque, moderately wide and deep; the lateral eleva- 

 tions moderately high with a very few, very minute granules. 

 The vestiture is scanty, the disc nearly glabrous, with short hairs 

 at the sides and on the declivity. 



Male about the same size and proportions as female but differs 

 in that the front of the head is transversely impressed below, with 

 a small tooth just above the epistomal margin ; the frons above 

 strongly convex with a transverse carina between the eyes, which 

 is angled at the center and there joined by a short median carnia 

 extending from above ; all of frons except carinae densely punc- 

 tured, nearly devoid of hairs. The elytra are widest at the base 

 with the sides weakly converging behind, the declivity more deeply 

 suleate, with the suture and lateral elevations more strongly 

 granulate. 



Type — A female, Grand Lake, Colorado, December 30, 1920, 

 E. E. Guild, collector; N. Y. S. C. F., Lot No. 1214. 



Described from a series of twenty-five specimens collected from 

 the bark of the trunk of dying lodgepole pine trees near Grand 

 Lake, Colorado, December 30, 1920, January 22 and February 18, 

 1921, by Mr. E. R. Guild, of the NationalPark Service. 



