Hoffmeister 1939 Microtus montanus June 30 Crooked R., 3600 ft., 3mi. E mouth of Bear Cr, Crook Co., Oregon Last evening, set some traps along and in an old alfalfa field on the Gibson ranch, at the above locality. The alfalfa has grown up with weeds to a considerable extent, and has not been irrigated or cared for recently. The area of green grass is green however, and caught the Microtus in the center of this area.