Rhipidomys leucodactylus (Tschudi, 1844) . Fauna Peruana, 1:183.

TYPE LOCALITY: Eastern Peru; Cabrera (1961) suggested the type's origin from the upper Rio Huallaga, a restriction which should be considered by a future revisor .

DISTRIBUTION: Guianas, S Venezuela, N Brazil, Ecuador, and Peru.

SYNONYMS: aratayae, bovallii, equatoris, lucullus, modicus, ochrogaster, rex, sclateri.

COMMENTS: Thomas (1887b) remarked that sclateri, named from British Guiana, was the eastern counterpart of Peruvian R. leucodactylus; Guillotin and Petter (1984) described aratayae, a subspecies of R. leucodactylus, from French Guiana.