aye - 1933 52 S. side Thompson Canyon, 3900 ft., Walker Basin, Kern Co., Calif. Oct. 14, 1933. 211 Neotoma fuscipes ♂ wt: 260 375-165-38-39 212 Neotoma fuscipes ♂ wt: 264 400-190-36-38 213 Dipodomys agilis ♂ wt: 79 300-175-45-19 214 Dipodomys agilis ♂ wt: 71 305-190-44-17 Today was a big work day. However, we did manage to get out for a few minutes this evening. I went back to the digger pines in Basin Creek where I saw the bats last night. They came out again tonight at about the same time, and about ten to 15 minutes later they all disappeared again. To correlate it - they disappear about the time the first frog croaks. They don't operate very far from the trees, never getting too much in the open. Tomorrow I'm going to take a little larger and try to get some of the more difficult specimens to obtain. I'm going over the ridge. Oct. 16, 1933. 215 Sorex ♂ wt: 4.5 qms. 95-40-7-7 216 Microtus ♀ wt: 101 210-63-23-16 217 Microtus ♀ wt: 87 200-62-23-17 218 Peromyscus truei ♀ wt: 30 200-105-24-26