DeMayo, J. 1942 Peromyscus boylii White-footed Mouse June 1. Cedar Grove, S. Fork Kings R., 4600 ft, Inyo Co, Calif. 54. Male Peromyscus caught in trap set on West bank of Sheep Creek, about 25 ft. from the stream, under the edge of a fallen log, among fallen branches and leaves. Pines, firs, willows, and several cottonwoods in the vicinity. Also "mountain misery". Testes measured 12 mm. June 3. One mile west of Roaring River, 4800 ft, Inyo Co, Calif. 60. Male Peromyscus caught in trap set in open area covered with scattered manzanita and Osteresia. Small flowers in open spaces between bushes. Mouse caught under edge of rather extensive thicket of manzanita about 50 ft. from a large yellow pine, and about 100 ft. from the bank of the river. Testes measured 13 mm.