J. P. PEARSON 1949 March 12-13 Left 3 p.m. with Earl Hubble. Set 98 line traps at San Quentin, 48 persons by Hubble on north side of road and 50 Sherman's on south. Plenty of sign. Baited with oatmeal. Home 7 p.m. Night at Berkeley mostly full moon. Pickled my traps at 8:30 a.m., 4 Microtus on north side [2 of them dead] and 7 Microtus on south [2 of them dead]. All adult-sized. Also 2 Perithus (megalostra). Yesterday p.m. turned over about 10 large boards along boardwalk across south marsh; saw 1 Microtus + 1 Sorex then but couldn't catch either. This morning turned them over again and caught 1 Sorex before he could escape into the lake area. March 19 Left 7 a.m. with Guillermo Mann, Mary & Dolf Kopford, Pittman, and Benson to continue Lake Co. circuit looking for Corynorhinus. Rainy. Abandoned house between Calistoga and Lower Lake; no bats; abandoned house between Lower Lake + Knoxville; no bats; sulfur-back mine abandoned house: 3 torpid Corynorhinus in basement, 1 Myotis yumanensis in lofting out aperture, temp. in basement 55°; Suerne tunnel 1 yumanensis in drill-hole and several small 1