Phylum Mollusca Linnaeus, 1758 - molluscs
   Class Gastropoda Cuvier, 1795 - snails and slugs
     Subclass Divasibranchia Minichev & Starobogatov, 1975
       Order Stylommatophora Schmidt, 1855 see Infraorder Stylommatophora Schmidt, 1855
         (Helicid Sigmurethra)
           Superfamily Helixarionoidea Bourguignat, 1883, orth. inval.
             Family Ariophantidae Godwin-Austen, 1888
               Subfamily Durgellinae Godwin-Austen, 1888
                 1 Genus Durgella Blanford, 1863
                 2 Genus Ibycus Heynemann, 1863
                 3 Genus Minyongia Godwin-Austen, 1916
                 4 Genus Myotesta Collinge, 1901
                 5 Genus Sakiella Godwin-Austen, 1908
                 6 Genus Satiella Godwin-Austen, 1908
                 7 Genus Sitala Adams, 1865
                 8 Genus Sophina Benson, 1859