The millipede genus Zinophora (Chamberlin, 1927) was previously revised based on the species present south of the Zambezi and Kunene Rivers. Since that revision, two additional new species have been discovered and are here described: Zinophora lobata (Mozambique) and Z. taromberai (Zimbabwe and Tanzania). This brings the total number of described species in the genus to 21. An updated key to species in the genus is presented. Detailed illustrations of the gonopods supplement the descriptions and a distribution map of Z. taromberai in Zimbabwe is provided. There appear to be up to three species groups in the genus and the character states defining these groups are discussed.