191 Oct. 1932 Trincado Ranch, 1/2 mi se Vernalis, Stanislaus Co., Calif. Nov. 3, 1932 Left Berkeley at 12:30 p.m. today for a two day period of collecting along the San Joaquin River in the northern boundary of Stanislaus County. The main purpose of this trip is to collect brush rabbits which occur there, but are rather scarce and difficult to find. Arrived at my cousin's ranch at 3:30 p.m. A Striped Skunk was seen flattened out on the road 2 mi W of Tracy. Only one California Ground Squirrel was herted this p.m. on the ranch. Between 3:45 and 5:30 p.m. I spent most of the time seeking brush rabbits, but only succeeded in seeing one which I procured. Cottontails were numerous. I saw nine during this time, but only shot one which was sitting about 35 feet away from the brush rabbit. The color difference between these two species of rabbits was quite noticeable. The brush rabbit was a dark gray and very well matched the color of the gray dead willow bases and wild rose stems which surrounded the small clearing in which it was located. The cottontail appeared conspicuously yellowish brown, and seemed to blend rather well with the dry yellow grass where it apparently had been feeding. However, I have at other times taken these two species in this exact locality within several feet of each other. The other cottontails were seen out in the