Murray 1948 Myotis californicus May12 Santa Ana, Arroyo de los Diejos, 25 +/- ft., 24°33'N, 111°35'W. Baja Cal. There is a small pool at this rancho, about 8x10 feet, at which we waited at dusk for bats to appear. It is bordered by palms and bamboo. Several bats began dipping down over it, of which we netted 6 and shot 1. Continued after dark by flashlight, at which time part of them were caught. None appeared to drink, though we may have frightened them from it. (See Journal) May25 El Carrizalito, 1400+ft.; 5 mi N Santiago, Baja Calif. At dusk waited beside a small concrete pool with a net. Found the bats arriving freely, some to drink and others flying back and forth above. Caught 2♂3♀ (See Journal). May26 Same location Tonight stayed at another similar pool just above the first. Found the bats began to fly later and were much fewer. Caught 1♀. May27 Same location Back to the original tank, caught 2♂. There were a few more bats tonight. May28 Same location This time netted 2.