The genus Gemixystus Iredale, 1929 (Gastropoda: Muricidae: Trophoninae) in New Caledonia

The genus Gemixystus Iredale, 1929 in New Caledonia is reviewed. Five species are recorded of which two are new, G. impolitus n. sp. and G. lenis n. sp. Gemixystus stimuleus (Hedley, 1912) is recorded for the first time in New Caledonia. Gemixystus transkeiensis (Houart,1987) is re-transferred from Vaughtia to Gemixystus.

With the present revised classification, twelve extant species are currently assigned to Gemixystus: G. calcareus Houart & Héros, 2012, Coral Sea, Chesterfield Reefs; G. fimbriatus Houart, 2004, New South Wales, South Australia and Tasmania (Fig. 6A-B); G. impolitus n. sp., Chesterfield Reefs; G. laminatus (Petterd,1884), South Queensland, Australia to Tasmania; G. lenis n. sp., Chesterfield Reefs; G. leptos (Houart, 1995), South Queensland, Australia and Chesterfield Reefs; G. polyphillius (Tenison-Woods, 1879), extant: New South Wales, Australia and S Tasmania; fossil: Miocene, Victoria(Fig. 6G-H); G. recurvatus (Verco, 1909), New South Wales, Australia and South Australia (Fig.6I-J); G. rhodanos Houart, 2004, South Queensland, Australia to Tasmania (Fig. 6K-L); G.rippingalei (Houart, 1998), Queensland, Australia; G. stimuleus (Hedley, 1908), South Queensland and New South Wales, Australia; G. trankeiensis (Houart, 1987), Transkei, South Africa (Fig. 6N-P).