Rattus enganus (Miller, 1906) . Proc. U.S. Natl. Mus., 30:821.

TYPE LOCALITY: Indonesia, Pulau Enggano (west of Sumatra and off the continental margin) .

DISTRIBUTION: Known only from Enggano Isl.

COMMENTS: Represented only by the holotype. Some cranial, dental, and external features resemble those in R. macleari from Christmas Island and R. xanthurus from Sulawesi, but the holotype of R. enganus is morphologically distinctive; determining its phylogenetic affinities within Rattus will require more specimens from Enggano Isl and revisionary study of the genus (Musser and Newcomb, 1983).