Order Rodentia - Suborder Hystricognathi Author Charles A. Woods text 1993 Smithsonian Institution Press Washington and London Editor Don E. Wilson Editor DeeAnn M. Reeder Mammal Species of the World (2 nd Edition) 771 806 book chapter http://doi.org/10.5281/zenodo.7353083 1-56098-217-9 7353083 Proechimys warreni Thomas, 1905 . Ann. Mag. Nat. Hist., ser. 7, 16:312 -313. TYPE LOCALITY: Guiana , 129 km up the Demerara River, Comackka . DISTRIBUTION: Guiana , Suriname , exact limits not known. COMMENTS: Subgenus Proechimys . Considered a distinct species by Husson (1978:436) ; a subspecies of cayennensis (= guyannensis) by Cabrera (1961:520).