Sorex pacificus May 17. Russian River State Park, Mendocino Co., California, Elevation 40ft. Female caught in museum special west of camp on edge of riparian habitat of thimbleberry, bracken, Equisetum, and red alder bordering grassland. This area bordered a creek, and the ground was wet. Especially today because it rained hard last night, and the goose was still dripping wet. May 20 Female caught west of camp south of the creek in the entrance to a hollow into a rock at the base of the hill next to the creek. Ground very damp and covered thinly with old leaves. Creek about 6 yards away. May 21 5 caught east of camp along road in dense growth of bracken, thimble & salmonberry & Equisetum. Ground here was wet and well- concealed by the overgrowth of foliage. May 26. Two caught at 150ft elevation south of camp at edge of meadowland in growth of Psychrois, Polirudortea, thimble & blackberry tangle. Ground very damp. Marsh water at base of hill about 1/4 mile.