KDixon 1951 Microtus californicus Oct. 13. Strawberry Canyon, Alameda Co., Calif. During the past several days I have seen countless meadow mice in daylight on the north slope of the lower part of the canyon. The ground, densely covered with un-cropped wild oats or other grasses, is criss-crossed with runways and burrows may be noted frequently. Some of the rodents seen may be Peromyscus (2 pale-flanked mice seen disappearing into holes in ground); the grassland habitat and runways indicate Microtus for the most part. Despite the near-plague proportions of incidence of the rodents, predators appear to be few. One Red-tailed Hawk (bird of the year) seen several times, yellow-bellied Racer in grass on Oct 11, not more than 2 Sparrow Hawks; Horned Owl heard at night.