Quast 1948 Tadarida mexicana 2 April 30 Mission San Ignacio 500 ft Baja California and the bats poured into them like a waterfall. No other species of bats were encountered with the Tadarida. I put up ten specimens (# 103 through 109). The specimens were obtained about 6:00 P.M. No salivary glands were found in the females. Other specimens put up by Dr. Benson, Tevis, + Murray. 9:00 P.M. One just captured in unused room with 4 openings to outside. Specimen was released. Was in room next to and continuous with a smaller room containing three Macrotus californicus. The Tadarida began flying at sundown (7:00 P.M.) and were flying singly and appeared to be feeding. Their chattering can be heard starting early in the afternoon from their hiding places within the walls of the old mission. May 2 Mulalga 25 ft Baja California Two ♂ and 20 ♀ caught in crevice between a 2 x 12 and plastered wall at 12 noon today. All means of getting the Tadarida out of the crevice were used from poking at them with a hooked wire to attempting to smoke them out with an oil smudge all without success. Finally results were obtained by pounding on the 2 x 12 with