Quest 1948 Journal 51 May 5 Bahia Concepcion 13mi S.F. Muley's Baja California and I have been unable to look any with our fishing outfits. Dr. Benson shot a Myotis californicus last evening at dusk. Caught a small Rattlesnake about 5 P.M. that had probably been quietly lying curled in the sand in a cavern 20 feet from Travis who was shelling clams. The snake did not move when approached and did not rattle when picked up with a shovel and moved into the open. It started crawling back to the rocks when placed on the ground and it was stopped by holding it down with the shovel. It then began rattling and attempting to bite the steel blade. Dr. Benson killed it by breaking its neck and its stomach contained one male Perognathus spinatus. The snake is specimen no 138; the Perognathus skull, no. 139. May 6 3:30 P.M. Minimum temp. last night was 69° Maximum today was 86°F. At present the temp- erature is 85°. So far the day has been warm, clear and windless, but now a slight breeze is starting. 49 live traps set last night in sandy area behind shell beach and below rocks in which traps were set previous night caught: 6♂, 1♀ Perognathus arenarius; 1 ♀ Perognathus baylei,