Echimys grandis (Wagner, 1845) . Arch. Naturgesch., 1:145.

TYPE LOCALITY: Brazil, Amazonas, Manaqueri .

DISTRIBUTION: Amazonian Brazil along the banks of the Amazon River from Rio Negro to Ilha Caviana.

STATUS: Locally common.

COMMENTS: Formerly included rhipidurus, which was given specific status by Emmons and Feer (1990).