V. Memmler 1941 5 Itinerary May 18, Russian Gulch State Park, Mendocino Co., California, elev. 70 ft. at Camp. wall. As we gained elevation several distinct habitat zones were obvious. In the valley is a Riparian Habitat with small grassy meadows. As one ascends the canyon wall one passes thru a small habitat of Lowland Fir, Douglas Fir, Red Alder, and Tousga heterophylla. Above this is a Coast Redwood forest with sparse undergrowth. As the Redwood begin to thin out above there are quantities of Rhododendrons, now in full bloom. At the top of the ridge there is a small plateau which contains many interesting plants such as Pinus contorta var. Bolanderi, Cupressus pygmaea, Bishop Pine, Gualteria shallon, Viola sermentosa, Huckleberry and Colorado Tea. Star flowers, Clintonia and ground iris grow mostly in the shade of other larger plants. May 19, Last evening Josephine Crowley and I set out 23 traps in Riparian marginal habitat similar to the two previous days but farther up the road. We found 11 animals in the traps, 1 Neurotrielus, 2 Sorex, 6 Peromys- cus, 1 Russel-backed Thrush and the hind quarters of 1 Zapus. Three of the Peromyscus had white spots on the face, these very