Peterson 1935 beaver, one must trap for a week ass. July 13. Catch consisted of one Nestoma lepida, 2 Perognathus p. olivaceus, 2 Eutamias m. scutator, 27 Peromyscus m. sonoriensis, one Poecetes g. confinis, and one Orseoloptes montanus. No beavers caught, traps not disturbed. Skin prepared of the Nestoma lepida, one Perognathus p. olivaceus, 2 Eutamias m. scutator, 6 Thomomys quadratus caught by Dr. Hall, and one Oryzotia g. mergens caught by Mr. Russell + Mr. Richardson. According to Dr. Hall, the Nestoma lepida is first specimen of the kind ever taken within 700 miles of the present locality. Internal organs of beaver caught by Mr. Russell + Mr. Richardson, weight 22.7 lbs., examined for parasites. Small red roundworm / 2-15 ram. long found in stomach. Preserved in 63% alcohol. Flukes found in cecum + large intestine. Preserved in 10% formalin. Strip of stomach wall from cardiac & pyloric ends, including peculiar glandular development of stomach wall, preserved in 10% formalin. Food of beaver as identified includes grass + sage brush leaves.