Palmer 1934 Microtus c. californicus Sept. 29, 1000 ft., 1/4 mi ENE Botanical Garden, Berkeley, Alameda Co., Calif. Caught 3 in 45 traps on a south facing rather steep hillside. Two were taken in dry grass, one in a well worn runway, the other at the mouth of a small hole about 1 1/2 in. in diameter. The other was taken at the mouth of a small burrow on dry bare ground in a good sized space between Artemisia bushes