Arborimus longicaudus True, 1890 . Proc. U.S. Nat. Mus., 13:303.

TYPE LOCALITY: U.S.A., Oregon, Coos Co., Marshfield .

DISTRIBUTION: W. Oregon, N.W. California (U.S.A.), south to Freestone (Sonoma Co.).

COMMENT: Includes silvicola; see Johnson, 1968, Syst. Zool., 17:27. Formerly included in Phenacomys; see comment under Arborimus .

ISIS NUMBER: 5301410008084003001 as Phenacomys longicaudus .

5301410008084004001 as Phenacomys silvicola .