Rhynchomys isarogensis Musser and Freeman, 1981 . J. Mammal., 62:154.

TYPE LOCALITY: Philippines, Camarines Sur Prov., SE Peninsula of Luzon Isl, Mt Isarog, 5000ft .

DISTRIBUTION: Known only from Mt. Isarog, Luzon, in montane forest formations at 1125 m and above (Rickart et al., 1991).