Nesoryzomys swarthi Orr, 1938 . Proc. California Acad. Sci., 23(21):304.

TYPE LOCALITY: Ecuador, Galapagos Archipelago, San Salvador Island, Sullivan Bay .

DISTRIBUTION: Known only from San Salvador (= James, Santiago) Island.

COMMENTS: Status viewed as a insular race of N. indefessus by Patton and Hafner (1983), but Orr (1938) underscored the trenchant diagnostic traits that separate N. swarthi from both N. indefessus and narboroughi . Remnant populations thought to exist as of 1965 (see Peterson, 1966b); recent efforts have uncovered only Rattus and Mus (see Patton and Hafner, 1983).