Myomys daltoni (Thomas, 1892) . Ann. Mag. Nat. Hist., ser. 6, 10:181.

TYPE LOCALITY: West Africa (see discussion in Rosevear, 1969:412) .

DISTRIBUTION: From Gambia and Senegal through Sierra Leone, N Ivory Coast, S Mali, Burkina Faso, Ghana, Togo, Benin, Nigeria, S Chad and Central African Republic to SW Sudan; eastern limits unresolved.

SYNONYMS: butleri, ingoldbyi, saturatus (Ingoldby, 1929, not Lyon, 1911), tuareg.

COMMENTS: Reviewed by Rosevear (1969) and Van der Straeten and Verheyen (19786). Although its range is allopatrically complementary to the distribution of M. fumatus, M. daltoni is probably not conspecific with that E African species. Chromosomal morphology is presented by Matthey (1964). The name tuareg was described as a subspecies of Grammomys macmillani, but listed by Rosevear (1969) as a species of Grammomys of doubtful validity, and finally identified by Braestrup and Hutterer (1985) as a possibly distinct subspecies of M. daltoni. Setzer (1956) retained butleri, known only by the holotype collected in SW Sudan, as a species, but its morphological traits, judged by Setzer's description, are those of M. daltoni.