Munday 1948 35 Journal Apr25 La Fortuna Mine, 2350 ft, 2 min N San Juanita Seca Chapala, Baja Calif and scrubby copals began. Some distance farther the terrain changed to granite sand hard packed with a few smaller rocks and only creosote and a few kinds of low brush. Shot a Cnemidophorus tessellatus. Saw 2 antelope ground squirrels along the way. Past Rancho Santa Inez there were rolling hills and plains with a prairie like low brush consisting principally of creosote. The soil was covered with small igneous rock of a dark rust color. We passed one great mound of granite boulders. Made camp rather late at the La Fortuna Mine where we will look for bats Apr26 Same location Hunting through the mine shafts last night resulted in 8 Choeronicteris mexicana, of which 2 were young still clinging to the mother and another young one hanging. There were also 8 Centrozores. This morning we looked again and found 2 more Choeronicteris mexicana The mine consists of several inclined shafts, leading down to horizontal tunnels on two levels, the lower being about 50 ft. below surface. These tunnels were moderately long and 4 to 5 ft. approximately in height. Through