A single rodent species has been collected from Auchas and 6 species in the fluvial deposits at Arrisdrift. There are no species common to the two localities. This paper describes the non-pedetid rodents from the proto-Orange deposits, which belong to four species in four families - Sciuridae, Cricetidae, Thryonomyidae and Bathyergidae. Three new species and one new genus are created, revealing that the Arrisdrift rodent fauna was somewhat endemic. Two of the genera are known from East African Early and Middle Miocene deposits.