R. Zwartz May 10, 1953 222 Rana aurora Dorington Trout Ranch, 4800', Calaveras Co., Calif. Muddy meadow bordered by yellow pine, sugar pine, incense cedar & white fir forest. Mainly grain in meadow, with stunted cattle grass stating. A few aspens around meadow A small lake supporting a commercial trout fishing business is backed up by a dam at the opposite end of the meadow. Draining thus in narrow creek which in turn drains into San Antonio's Creek at the end of the meadow. Rana aurora was taken both in the crest in the meadow and on the lake itself. They were taken at the border of the lake and two from the stream, where others were seen. The stream is narrow, seldom over 2' wide, with undercut edges deeply grown in grass. The stream is as deep as and sometimes deepers than wide for most of its length. While trying to drive out a frog which had taken refuge under an overhanging bank, I came up with a net full of eggs nearly ready to hatch.