Based on anatomical structure (genitalia, radula), and considering conchological characters, a new monotypic subgenus Iranoxychilus is established for Oxychilus herzi from N Iran.
A new subgenus, Pacificophanes subgen. nov., of the genus Caenophanes Foerster with two new species C. (P.) baloghi sp. nov. (type species) and C. (P.) neocaledonicus sp. nov. are described from the New Caledonia. Additional new Austrolasian species of genus Caenophanes (Caenophanes), C. (C.) neoguineicus sp. nov. are described from Papua New Guinea. The short discussion about contents and distribution of the genus Caenophanes is presented.