Janua is a genus of polychaetes, containing the following subgenera and species: Dexiospira Caullery & Mesnil, 1897 Janua ainu Uchida, 1971 Janua bushi (Rioja, 1942) Janua ceylonica (Pillai, 1960) Janua corrugata (Montagu, 1803) Janua glossoeides Harris, 1968 Janua karaitivensis (Pillai, 1960) Janua marioni (Caullery & Mesnil, 1897) Janua nipponicus (Okuda, 1934) Janua oshoroensis Uchida, 1971 Janua pagenstecheri (de Quatrefages, 1865) Janua preacuta Vine, 1972 Janua pusilloides (Bush, 1905) Janua quasiacuta Lommerzheim, 1981 † Janua semidentata (Bush, 1905) Janua spirillum (Linnaeus, 1758) Janua tricornigerus (Rioja, 1942) Janua turrita Vine, 1972 Fauveldora Knight-Jones, 1972 Janua anticorrugata Vine, 1972 Janua kayi Knight-Jones, 1972 Pillaiospira Janua natalensis Knight-Jones & Knight-Jones, 1974 Janua trifuscata Knight-Jones, 1973 Incertae sedis Janua echinata (Wesenberg-Lund, 1953) Janua formosa (Bush, 1904) Janua pseudocorrugata (Bush, 1904) Janua steueri (Sterzinger, 1909) References Serpulidae