Quest 1948 Eptesicus fuscus 7 June 25 Los Martires, 300+ ft, 23 mi by road N.W. San Ignacio Baja Calif. There are no mountains or hills in this vicinity, th nearest one being visible at a great distance to the east. A cement water tank and a long cement watering troughs both containing water, and a windmill exist at this place. One Myotis californicus was obtained shortly after this specimen was shot. Bats were very scarce this evening. June 30 San Lucano, 100+ ft, 5 mi S. Santa Rosalia, Baja California Shot three and Dr. Benson two of this species one evening over a cornfield at dusk (See Journal pg. 148). All four were females and one of my specimens (#444,445,446) had two embryos, one had one embryo and the other none. The feeding areas of this species were confined to the limits of the cornfield (approx. 150 x 250 ft) and we had to go into the area to shoot them, thus leaving the boundary but rarely. Pipistrellus deserius were also feeding over the cornfield but did not limit themselves to its limits. None were seen drinking at the pond of this species.