Order Rodentia - Family Muridae Author Guy G. Musser Author Michael D. Carleton text 1993 Smithsonian Institution Press Washington and London Editor Don E. Wilson Editor DeeAnn M. Reeder Mammal Species of the World (2 nd Edition) 501 755 book chapter http://doi.org/10.5281/zenodo.7353098 1-56098-217-9 7353098 Nectomys squamipes (Brants, 1827) . Het Geslacht der Muizen, p. 138 . TYPE LOCALITY: Brazil , Säo Paulo , Säo Sebastiao (as restricted by Hershkovitz, 1944:32 ) . DISTRIBUTION: Basin of the Rios Magdalena and Cauca , NC Colombia ; east of the Andes broadly distributed from Guianas, Venezuela , and E Colombia southwards to NE Argentina , Uruguay , and SE Brazil ; sea level to 2000 m . SYNONYMS: amazonicus , apicalis , aquaticus , brasiliensis , cephalotes, fulvinus, garleppii, grandis , magdalenae , mattensis, melanius , montanus , napensis, olivaceus , pollens , rattus , robustus , vallensis. COMMENTS: Hershkovitz (1944) arrayed most nominal taxa of water rats as subspecies of N. squamipes , a view maintained by Cabrera (1961). Gardner and Patton (1976) intimated the mixed composition of squamipes ; Reig (in Honacki et al., 1982 ; 1986) has offered enumerations of valid species and probable synonymies. Fullscale generic revision warranted. See Ernest (1986 , Mammalian Species, 265).