Quest 1948 Journal 76 May 22 Buena Vista, 25½ ft, 23°35'N, 109°41'W, Baja California The skulls of the Macrolus taken at the first cave were cataloged by Murray & Tevis; Dr Benson put up the one Leptomys! May 23 Same Location. Minimum temperature last night was 69°F. It was a beautiful still moonlit night with a full moon and no clouds in the sky. 50 live traps set along a brush fence 500 yards N.W. of camp and through sandy arroyo- bottom caught only two Perognathus spinatus (#238+239). The sparsity of the catch I believe to be caused by the brilliant illumination of the full moon last night. Netted two Myotis californicus in a house 30 yards N. of camp, in which people are living in, last night. The bats were caught at dusk and were noted feeding around the mesquite and in the house the night previously. A Peromyscus eremicus live in the slatshed roof. A Cactus wren has a nest in one of the outer branches of a Palo Verde tree next to camp. There are young for they are heard when the bird arrives with food. Our camp is situated in a large clump of mesquite and Palo Verde trees about 300 yards north of the school here. We are camped at the west end of the bay, about 55 yards