2. Palmer 1934 Reithrodontomys megalotis longicaudus Mar. 25 900 ft., 1/4 mi. E.N.E. of Botanical Garden, Berkeley, Alameda Co., Calif. Took 3 &'s in traps set in Microtus runways in grass and sedges. Hillside with gradual slope toward the south. Nearby were Artemisia, Poison Oak and Bush Lupine Two of those caught an #21 and #25. The other one was caught at the base of the tail and was still alive. He was taken home and then given to E.J. Hooper. The feces left by The mouse in the box were about 3/6 - 1/4" long, and a little over 1/6" in diameter, tapering from near the middle to the pointed ends. Sept. 29 1000 ft., 1/4 mi. ENE Botanical Garden, Berkeley, Alameda Co., Calif. Took 6 in 45 traps on a south facing hillside covered with dry grass between rather large clumps of Artemisia, Rhoeo serraifolia, Bush Lupine and Bacharus. It appeared that most of these were caught in well worn runways probably belonging to Microtus