Quadr 1948 Journal 133 Jun 23 Santa Rosalilla, 25° ft S.F. and Bahia de Concepcion Baja Calif. water hole is small (4 x 6 ft) and about five feet deep, th sides being reinforced at the higher levels by rock siding. The ranch is occupied this time by three Mexicans which have about 20 head of cattle and a few horses and burros - a surprise to us for we had found th ranch vacant at the time of our previous visit. On the surrounding flat sandy land a forest of Cardones grow and are bearing fruit at this time. We tried the fruit but found it un- satisfying - it bursts open when ripe, while on the cardono, exposing its red interior and small black seeds. Shot bats last evening and found radius few flying at dusk. Five or six Eptesicus tuscus appeared at 7:40, flying down the wash and feeding on the lee side of mesquite and Palo San Juan trees. Several of these were obtained, one of which was netted by Murray as it flew low above the ground among the Cardones. At dark went to th waterhole and found quite a number of them feeding about the water and occasionally drinking it. I netted 3 ? Antrozous ming there between 9 and 11:30 and one Myotis californicus which appeared to be sick, it flying very slowly and in an uncertain