per, 1935 7 mi. W. Mariposa, Mariposa Co., Calif. Aug. 13, prune and oatmeal. Most of the mouse traps were set near Arctostaphylus bushes and near rocks in the hope of capturing some "Kangaroo rats" which Mr. and Mrs. Woodard claim are present here. This morning I found one young wood rat, one juvenile Beechey ground squirrel and three Peromyscus californicus in my traps. Several traps were sprung and found empty. The traps baited with dried prune and oatmeal had not been touched, while those baited with cheese and oatmeal or oatmeal alone either held an animal or were sprung. The woodrat was caught at the edge of a lumber pile under which it probably was living. Perhaps many of these smaller holes seen in this region belong to the californicus parasitic mice and are not wood rat nests at all. Examination of the fecal material saved may throw some light on the question, for it is matrix of this size and shape that is abundant everywhere about crevices in rocks, brush piles, and other suitable places.