Palmer 1934 Mar. 9 Perognathus c. californicus. 900 ft., North Fork of Strawberry Canyon, Berkeley, Alameda Co., Calif. Took one B (m oat baited trap. Trap set under Old Man Sage (Artemesia californica) on dry gravelly ground. Hillside rather steep slope with south exposure Mar. 14. 600 ft., North Side of Claumont Canyon, Berkeley, Alameda Co., Calif. Took one S (#16) in oat baited rat trap set in the entrance to an abandoned ground-squirrel burrow. The burrow was on rather steep gravelly bit of hillside facing southwest. Surrounding vegetation was mainly Artemesia and Bachaus with grass. The mouth of the burrow had grown up to weeds but fresh dirt about the mouth indicated recent work. Mar 16. 650 ft., North Side of Claumont Canyon, Berkeley, Alameda Co., Calif. Took one S (#20) at the mouth of a burrow beneath the overhanging edge of a large boulder. The burrow was about 1 1/2" by 2", and the entrance was filled with grass. In his cheek pouches were several seeds of some grass, apparently Bromus. Tail enlarged.