Hoffmeister 1942 Itinerary June 12 E Base Waucoba Pass, 1300 ft., Inyo Co., Calif. It is probable that the young, perhaps because of population pressure and the necessity of seeking home sites, have moved down from the talus and rock-covered adjacent hills. However it is interesting that I have caught only young P. ermitus on these hills also. 60 traps set on the hill, in rocks, under pions and junipers, and in other combinations of habitat niches, caught 8 Peromyscus maniculatus and 7 (young) P. ermitus. Caught the mother Citellus lateralis of the 6 young. Shot a Cactus wren in the piñon-juniper association about 200 feet above camp. Caught 2 & Thomomys bottae in 4 gopher sets made early in the day. There is abundant sign of fresh and old (winter) workings in the Artemisia (piñon-juniper-free) flat that represents Waucoba Pass. Fresh workings extent appear only a short distance into the piñon-juniper association. The runways are exceedingly large in most cases, most being at least 4 inches in diameter. In one set, the main runway was found at a depth of 18" inches (no. 797 caught in this run). The soil is slightly reddish in coloration and is rocky, containing rocks averaging about 2½ inches in diameter irregularly distributed throughout. During the morning, while hunting, I shot 3 linnets, all of which apparently were not adult; 1 Bewick wren,