238, 239, 241, 285-291. 1952: 20, 21, 47, 50-52, 55, R. Zweifel April 4, 1953 Journal 183 found in ponds beside the stream but not in the main stream. Absence of algae or moss on rocks below the present water level suggests possibility of chemical pollution from sewage disposal plant. Ensatina eschscholtzii, Anides flavipunctata, Cuncea skiltoniana, Hornootus coerules and Salapora occidentalis also present. Bear Creek, 3 mi. NE Boulder Ck, Santa Cruz Co., Calif. Two Rana boylii taken and another seen. Others 1 Ensatina eschscholtzii (not kept) 7 Anides lugubris (others not kept) x Triturus torosa 2 Triturus gromlieze 1 Salapora occidentalis 1 Cuncea skiltoniana (other escaped) 2 Hornootus coerules 2 Hornootus multicarinatus (skins not kept) 1 Patuophis catomfa 1 Coluber constrictor morpha 2 Zonoplectro getulus californicus All terrestrial animals were taken in grassy clearings in the lower-redwood forest (live oak, madrone, douglas-fir),