The spider genus Ocrisiona Simon is revised. Eight species are diagnosed, described and illustrated, five new ones are established: O. eucalypti, O. koahi, O. parmeliae, O. victoriae and O. yakatunyae. Four species, O. aerata (L. Koch), O. elegans (L. Koch), O. frenata Simon and O. parallelistriata (L. Koch), are excluded as not related, three additional ones, O. complanata (L. Koch), O. fusca (Karasch) and O. invenusta (L. Koch), are transferred to Holoplatys. The genus is redefined and its relationships are discussed. Remarks on biology are presented, maps of distribution and key to the species are given. Geographical distribution of Ocrisiona is limited to Australia and adjacent areas; O. leucocomis (L. Koch) and O. melanopyga Simon are mainland species also recorded from Tasmania, and O. melancholica (L. Koch) is also known from Lord Howe Island.