Quest 1948 Journal 85 May 25 El Carrizalito, 1400 ft., 5 mi. N. Santiago, Baja California. the Coyprionous within three minutes at late dusk and obtained none before or after that time. May 26 Same location. 16 Schuyler traps set among large granite boulders, Limboi, Ironwood, mesquite, and Petaya dulce on steep side hills caught three Neotoma lepida. Three traps were set off and pulled the full length of their chains with nothing in them. Bait used was dried apple and dried peaches. Only Neotoma lepida caught by the rest of the group in Schuylers last night. Minimum temperature last night was 75°; maximum today was 90°. The weather has been absolutely clear with a warm breeze, in the afternoon. Revisited Las Cuevas and its caves this morning. The first cave, described earlier, contained an estimated eleven square feet of tightly packed Myotis velifer this second time. In addition to this eleven square feet of Myotis rooting on the open vertical walls in two places (one 3 feet²; one 8 feet²) many were found in deep pockets in the rocks. We captured only eight Natalus mexicanus and noticed that they seemed much fewer in number than the time previously.