Quart 1948 Leptonycteris (?) 4 May 4 1/2 mile south of Mulege, 100+ ft. Baja California. Several caught in cave about 1/4 mile south of the mission at Mulege. Specimens prepared by Dr. Benson. May 20 1 mi E. of San Antonio, Baja California About 20 caught this afternoon about 5:30 p.m. in an abandoned mine. The mine was composed of a horizontal tunnel with a few blind passages leading from it and another tunnel at an angle of about 45° leading from the horizontal tunnel to an opening about 150 ft. higher on the hill. The blind passages were present near the upper opening, the bats being first seen in the outer- most of them. It is possible that they had gathered there preparatory to flying out of the mine at dark. When disturbed by a shot from Dr. Benson most of them flew back into the interior of the mine. A few of this type and Macrotus californicus were obtained by closing off the outermost passage with a large mosquito net and then catching them by hand. The largest number were captured later by closing them into another blind passage which was closed off with a mosquito net. Of the five females I put up (#225-229 incl.), none had embryos. June 7 Punta Gasperino, 10+ ft., 23°16'N, 110°9'W, Baja California 4 Obtained by Dr. Benson, Levis, & Murray in cave by sandy wash between here and Miquerino. Cave