Mus setulosus Peters, 1876 . Monatsb. K. Preuss. Akad. Wiss. Berlin, p. 480.

TYPE LOCALITY: Cameroon, Victoria .

DISTRIBUTION: From Guinea (Mt Nimba) and Sierra Leone eastward through Liberia, Ivory Coast, Ghana, Togo, Benin, Nigeria, Cameroon, Gabon, Central African Republic, N Zaire (Haut-Zaïre), S Sudan, WC and S Ethiopia to N Uganda and W Kenya (documented by Rosevear, 1969; Petter and Genest, 1970; and our study of samples in the American Museum of Natural History, British Museum, Field Museum of Natural History, and National Museum of Natural History).

SYNONYMS: pasha, proconodon .

COMMENTS: Subgenus Nannomys . A distinct species sometimes confused with M. musculoides, which occurs over approximately the same region (Rosevear, 1969). Both pasha (Thomas, 1910a) and proconodon (Rhoads, 1896) were originally described as species. Osgood (1936) associated pasha with M. proconodon, and we agree with his identification. Petter and Matthey (1975) regarded pasha as a species, noting that it might be referable to M. setulosus . Both Osgood (1936) and Yalden et al. (1976) recognized proconodon as a distinct species endemic to Ethiopia. Our study of Osgood's specimens, some of which are near-topotypes, revealed that their morphological traits fell within the range of variation typical of M. selulosus . Our identification was forshadowed by Petter and Matthey (1975) who cited the range of M. selulosus to include Ethiopia, based on a letter from J. Prevost. Chromosomal data for samples from W Africa were documented by Jotterand (1972), Jotterand-Bellomo (1981, 1986), and Matthey (1964).