Quest 1948 Tadarida femorosacca May 30 El Chorro, 800+ ft., 2 mi. W. Agua Caliente, Cape District, Baja Calif. Seen from dusk to dark last night. Were flying very high early in the evening, but descended to about 50 feet above the ground just before dark. Were feeding in company with Pipistrellus hesperus and Eptesicus ega. Dr. Benson shot 4 Tadarida femorosacca and Tevis on last night. The canyon proper above the dam was better for shooting this species than the broader, flatter portions near and below camp, the bats flying much lower and circling more in the narrow canyon. T. femorosacca is distinctive in its large size, narrow wings, and rapid speed of flight. May 31 Same Location One male and three females (#283-286 incl.) obtained last night between 7 and 7:45. Specimens were feeding about 40 feet high above the pond above the dam line. June 1 Santa Anita, 250+ ft., Cape District, Baja California. About five seen flying over field in arroyo bottom yesterday at dusk. This species was flying very high (well above tree level). Dr. Benson shot one. Field bordered by Mangos, Palms + Mesquites. June 4 6 mi. N. San Jose del Cabo, 250+ ft., Baja California One secured from rock crevice by Dr. Benson this morning. Specimen was found in crevices formed by exfoliating layers of a large spherical granite boulder in rock outcrop 200 yd. south of camp. Probably one of the two of this