Oryzomys nelsoni Merriam, 1898 . Proc. Biol. Soc. Washington, 12:15.

TYPE LOCALITY: Mexico, Nayarit, Maria Madre Island .

DISTRIBUTION: Known only from the type locality.

STATUS: IUCN - Extinct?

COMMENTS: Known only by 4 specimens of the type series. Allied to O. couesi, under which Hershkovitz (1971) listed it as a subspecies. Others (Goldman, 1918; Hall, 1981) have maintained it as a species in view of its unique differentiation from mainland O. palustris . Presumed to be extinct (see Wilson, 1991).