Chattin, J. 1940 Itinerary Dec. 24 (Contd) 7-mi N.E. Port Yuma, 200 ft. Imperial Co. Calif. hispidus (caught in Bermuda grass near bamboo) 2 Perognathus penicillatus, 6 Mus musculus and 5 Reithrodontomys. p.m.- Rain during late morning and early afternoon. - Drove into Yuma for mail and supplies. - On return at 1-mi. E of Bard contacted George Barry, a government employee hired to trap gophers from banks of the irrigation ditches, and from him obtained 16 Thomomys which were wet and bloody and since future prospect of obtaining more from him looks good these were discarded. Barry says he sets out about 75 traps per day and catches 20-40 pocket gophers during 1 day. After supper we looked at 8 rat traps set along canal bank in freshly cut bamboo and obtained 3 Sigmodon from them.- 2 young individuals were taken from the same trap, evidently having been caught simul- taneously. Dec. 25 (a.m.) 6 Sigmodon, 4 Reithrodontomys, 2 Mus were taken in trap line. 1 Thomomys caught in gopher trap set along canal bank. In p.m. a short trip was taken to mine shaft located in dry wash at 3-mi. N Potholes, 250 ft., Imperial Co. Calif., where colony of Macrotis californicus was present. 70 bats were taken here. Both sexes were