Francis Pack 1941 microtius May 18 Russian Gulch State Park, Mendocino Co., California, Elevation 500 ft Male caught south of Mendocino pine laurena 1/2 mile north of camp in dense growth of tanbark oak, Rhododendrons, leatherberries, manzanitas, Cupressus pyramida, and small pines (sp?) Here no matting of dry grass on ground as usual Microtus habitat. Ground covered with brown, decaying leaves and rushes growing close to the ground. May 20 40' Elevation Male caught in meadow west of camp. Grass 24-36 inches high. Dense covering of dry grass at base of tall, green grass through which there were extensive runways in which we found fresh grass clippings and feces. May 28 150' Elevation Five ♂'s and one female (lengths - 31mm) trapped in meadow about 300 yards from the ocean. Meadow sloped gently - 5°- toward the ocean. Grass about 2 1/2 to 3 feet with thick dry grass near base on ground. Through this were many well-used runways containing small pieces of grass shoved off at the ends. Thus in small piles on bottom of runway. Three caught in grass under Bishop pines. Pines didn't interfere with growth of grass. May 30 One Microtus (?) caught in trap set in Redwood forest in well-trampled depression under a log. Well-laded and very damp. Ground covered with thick