(10470) Our moss killed a cotton-tail in a small grassy patch near town. September 24, 1925 - very rainy. worked on bats collected day before. September 25, 1925 - cloudy. Heavy rain about noon and some rain in the afternoon. Today we took the mules and followed the brushy trails to the Encuentros mine which is about 3 mi. west of Divisadero on the west bank of the Rio Secos river which empties into the Bothera river at Encuentros. Our lights didn't last long but we knocked down three bats which I called Grand pa bats. (10493-10494-10495). The opening to this old mine runs in at right angles to the vein, which was quite wide and high. There appear to be thousands of bats flying back and forth. These bats have a very peculiar face. When the mouth is opened wide the fringe of skin around its edge and the long hairs on the upper lip form a much wider opening than the mouth ordinarily would. Another peculiar structure is the bald spot on the head. In fresh specimens this was pinkish flesh in coloration. The wings and intercaudal membrane formed into a basket effect. This is probably of much aid in catching moths.