V. Menmler 1942 Peromyscus April 1, Bergund Ranch, 1450 ft., 5 mi. N Corralitos, Santa Cruz Co., Calif. Six P. Californicus 3 q and 3 ♂ and 4 smaller Peromyscus assumed to be maniculatus, 2 q and 2 ♂ were caught in a trap line of 146 Museum Special traps. One of these, P.C. was caught in a strip of Chaparral running thru the apple orchard. 3 P.C and 3 P.sn. were caught in traps (about 113 set) along edge of chaparral along orchard where there is a change in habitat to Meadowy top ridge. This is dry and open Chaparral on the edges where we set. One P.m. was caught in one of 25 traps set in a meadow for Microtus. The dry Chaparral is composed largely of Poison Oak, Blackberries, Strawberries, Lotus sp. and Old apple trees. April 2, One P.C was caught in the same strip habitat as mentioned above, in one of 10 traps. One P.C. was caught on a knoll covered by dry Chaparral. We set 20 traps here. There were large quantities of Lotus sp. Baccharis sp. and Pinos (Mulch had been planted). April 4, Mud Creek, 800 ft., 3 1/2 mi. S.W. San Juan, Santa Cruz Co., Calif. 3 ♂ and 1 q Peromyscus Californicus and 1 q running Peromyscus maniculatus as well as 4 immature Peromyscus. 134 traps were set. 24