Ranellidae Gray, 1854
Lampusia affinis
Monoplex amictus (Reeve, 1844)
Monoplex aquatilis (Reeve, 1844)
Monoplex comptus (A. Adams, 1855)
Monoplex corrugatus (Lamarck, 1816)
Monoplex durbanensis (E.A. Smith, 1899)
Monoplex exaratus (Reeve, 1844)
Monoplex gemmatus (Reeve, 1844)
Monoplex intermedius (Pease, 1869)
Monoplex keenae Beu, 1970
Monoplex klenei (G.B. Sowerby Iii, 1889)
Monoplex krebsii (Mörch, 1877)
Monoplex lignarius (Broderip, 1833)
Monoplex macrodon (Valenciennes, 1832)
Monoplex mundus (Gould, 1849)
Monoplex nicobaricus (Röding, 1798)
Monoplex norai (Garcia-Talavera & de Vera, 2004)
Monoplex parthenopeus (Salis-Marschlins, 1793)
Monoplex penniketi (Beu, 1998)
Monoplex pilearis (Linnaeus, 1758)
Monoplex thersites (Reeve, 1844)
Monoplex tranquebaricus (Lamarck, 1816)
Monoplex trigonus (Gmelin, 1791)
Monoplex turtoni (E.A. Smith, 1890)
Monoplex vespaceus (Lamarck, 1822)
Monoplex vestitus (Hinds, 1844)
Monoplex wiegmanni (Anton, 1838)