Quest 1948 Journal 118 June 12 La Laguna, 6200+ ft, Sierra de la Laguna, Bajo Calif. it by swatting it with sticks and their hands. Dr. Benson finally interfered and released it away from camp. June 13 Same Location Minimum temperature last night was 51° F. Shot bats last night and obtained 1 Tadarida mexicana, 1 Pipistrellus hesperus, and 2 Eptesicus fuscus. Found that the Dasypeltus spp and Tadarida mexicana would feed in the western area of the flat over the flat and not along the forest border as the Eptesicus fuscus and Pipistrellus hesperus. I can find no explanation why the bats were much more numerous over the western section of the flat at dusk than they were over the eastern section where ponds and running water exist. The bats appeared at 7:20 last night, all species being seen within 10 minutes. 49 Museum Special mouse traps baited with walnut and set along stream exit canyon among willows and grass caught 2 Peromyscus truei with no other traps disturbed. No other shrews have been caught subsequent to Keith's (Murray) Departed La Laguna about 10:30 June 13 Todos Santos, 50+ ft, Baja California Shot bats this evening that were flying over sugar-cane fields and around palm trees