Kaye - 1933. Thompson Canyon Walker Basin, Oct. 20, 1933. Mophs were taken chiefly in open fields, near water. We saw very few gopher workings on the hillsides. There is apparently only one ganna of bat here, the pypistellus, and there are not too many of those. Sour, of which we have taken four, seem to avoid the areas in which there are other mammals. We never got them until after we had cought most of the other mammals out first. Reithros occur more thickly in given areas than the dipsos, but are not found in near as many habitats. The reithros we got out of grass only, and only from the grass near camp. Carnivores occur here in great numbers but not this year. The government trappers in here last year just about cleaned them out. Coyottos, fox, and bob cat were the most common, with less shunk, bear and oler. We were unable to obtain any trace of weasel. Any occasional mountain lion is reported, and there is some reason to believe that opossum have gone through here. Com have been seen occasionally. The most interesting mam-