Otomys maximus Roberts, 1924 . Ann. Transvaal Mus., 10:70.

TYPE LOCALITY: Zambia, Machile River, a northern tributary of the Zambesi .

DISTRIBUTION: S Angola, SW Zambia, Okavango region of Botswana, and Caprivi Strip of Namibia.

SYNONYMS: cuanzensis, dovisi.

COMMENTS: Described as a subspecies of irroratus and later elevated by Roberts (1951) to specific level. Viewed as a subspecies of O. angoniensis by Davis (1974), and so ranked in many faunal treatises (e.g., Meester et al., 1986; Misonne, 1974), or continued as a distinct species (Smithers, 1983; Swanepoel et al., 1980), which leaves the matter of their synonymy as inconclusive to date.