8/3/25 fruit and vegetation pulp. The vegetation content appeared to be soft roots probably from some of the bog water or swamp plants. In a hollow tree which was open at the bottom and also farther up so that the light showed through, I shot several little black bats. There were about 15 in the tree. August 3, 1925 - Heavy fog in the morning. It cleared away about 7:30 A.M. cloudy in the late afternoon. I collected another gray-tailed squirrel (Sciurus) near the lake. From the four two-lined bats that I collected with a shot pistol, I discovered on the wings of the F's a little pouch or pocket. The female did not have the pouch. In a canyon that led away from the lake I was met by a bunch of spider-monkeys (Ateles). Those in front appeared to be the younger forms. One that I collected proved to be a young & My presence had apparently aroused their curiosity and they came to see what the intruder might be. Their calls soon brought the old folks to the scene. Through the tree tops they came chattering with excitement. They shook the twigs, hung by their tails, and made faces chattering all the time. When I fired they dashed off through the trees again; this time with out much to say. The stomach content was fruit seed and pulp.