9/1/25 24 September 1, 1925 - very warm. Rained in the evening. Today I collected a male Spider monkey (Ateles). He was alone in rather dense jungles. His stomach contained red berries. I saw five [illegible] Gray- tailed squirrels (Sciurus) but they were in [illegible] dense jungles and at too close range to shoot. In the evening just before it rained I went out along the lake's edge in the boat and shot two Mastiff bats. They were flying very fast. Stomachs contained insects. September 2, 1925 - cool day. I shot three [illegible] Salvador brown bats in the canyon. There were only five or six bats around the rocks. In the evening we shot two more Mastiff bats along the lake's edge. They were flying high in the early evening but came down nearer to the water later in the evening. We heard small bats among the trees probably Saccopteryx. The four Mastiff bats which referred to in my serial numbers as red mastiff bat, black mastiff bat, and brown mastiff bat, have the same markings except for color. The one female brown mastiff bat is smaller than the males. In the earlier part of the evening I first see these bats flying over the trees near the top of a ridge east of the lake, but later they come down within gun [illegible] range.