Theeler 1958 P. 24 Journal July 16 (cont) Tunco Mines, Imperial Co., Calif. in good shop. were unsuccessful in catching any. About 9:30 P.M. I checked the trap line and took 6 Perognathus, 3 Peromyscus and a Neotoma. July 17 Tunco Mines, Imperial & Calif. This morning my traps produced 7 Perognathus 1 Dipodomys merriami, 3 Peromyscus, and 1 Neotoma. In checking the mine shafts I got several Macrotes and Antrostyus to put up. While I settled down to spend the A.M. skinning I went out to check other mine shafts for bats. However after 20 min. he called me to help get a rat he cornered under a rock. After struggling for 20 min. or so we were able to lift the rock enough to get a shot at the snake and getting bitten. It proved to be a Crotalus mitchelli. While checking and retrieving traps that evening I got a [illegible] tremodophorus out of one of them. During the day the heat was oppressive. This was heightened by a lack of water. The area has no springs or wells so our water was limited to what we had brought in. About 1 P.M. Beck returned with several bats he had found. These included 7 Eptesicus and 3 Pipistrellus that I put up. The remainder he banded and released. July 18 Tunco Mines to Mountainer Mine, Riverside Co., Calif. We got up early and I pulled in my traps getting