Oryzomys galapagoensis (Waterhouse, 1839) . Zool. Voy. H. M. S. "Beagle," Mammalia, p. 66.

TYPE LOCALITY: Ecuador, Galapagos Islands, Chatham Island .

DISTRIBUTION: San Cristobal (= Chatham) and Sante Fe (= Barrington) islands.

SYNONYMS: bauri.

COMMENTS: Cabrera (1961) assigned bauri as a synonym of O. galapagoensis, an action more fully documented by Patton and Hafner (1983). Related to Oryzomys xantheolus complex on mainland South America (Gardner and Patton, 1976; Patton and Hafner, 1983). Extirpated from San Cristobal Isl but populations (O. g. bauri) still inhabit Sante Fe Isl (see Patton and Hafner, 1983).