Murray 1948 Journal May 26 El Carizalito, 1400a., 5 min. N. Santiago, Baja Calif. Caught 1 young Neotoma lepida in the Schuylers which was discarded. The others were untouched. Last night Lewis netted 3 Corynorhinus at the upper pool; a new record for this area. Again put up bats all day. This evening went to the upper pool, but found the bats far fewer, which was also true of the other location. None attempted to drink; rather seemed to feed several feet above. Often they would circle away and back several times. Usually there was a single bat, sometimes 2 or 3, with an interval of several minutes between. Even pipistrelles didn't arrive at the tank until 7:10 and began to fly later than usual. Saw one very large bat at about 7:30. There seems to be nothing in the circumstances to explain the differential other than the possibility of reducing the population or frightening them away from here. Caught only 1? Pipistrellus hesperus, 1? Myotis californicus. Dr. Benson cought one more Corynorhinus at the other tank. The others got a few more antrozous in the building.