Quast 1948 Journal 113 June 11 La Laguna, 6200-ft., Sierra de la Laguna, Baja California of the pools and among the large granite boulders. Quite a bit of grass grows along the stream and numerous composite plants, and one patch of Maiden-hair fern was seen. Very little leaf mould in this area. Set 50 Museum Special traps baited with walnut this evening among willows in canyon exit. June 12 Same Location. Minimum temperature last night was 55° F. Shot bats last evening at dusk and obtained one Eptesicus fuscus. Others obtained Tadarida mexicana, Dasypus egg, and Pipistrellus hesperus in addition. Bats did not appear until about 7:30 P.M. and were first seen feeding around and over the wooded hill. It was not until later that they descended to feed around the edge of and on its flat. 49 traps set last evening in willows in canyon exit caught two Peromyscus eremicus and two Peromyscus truei. One trap was missing, the string only remaining, and was probably chewed loose from its tie-cord by a trapped Neotoma. Three, trap- ping further down the canyon caught the same species. Three additional Mexicans appeared last night and stayed for dinner and breakfast this morn- ing. All carried rifles and were presumably hunting for deer although the season is closed