Four new species of Unixenus Jones, 1944 (Diplopoda, Penicillata, Polyxenida) from Australia

Unixenus carnarvonensis sp. n., U. corringlensis sp. n., U. barrabaensis sp. n. and U. myallensis sp. n. are described from Australia. A revised diagnosis of U. karajinensis and new details on the distribution of the species are given. A key is presented to 10 of all 11 currently known species of the genus.