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 Helicoidea Rafinesque, 1815
             Family Helicidae Rafinesque, 1815
               Subfamily Helicinae Rafinesque, 1815
                 Genus Helix Linnaeus, 1758
                   1 Subgenus Cantareus Risso, 1826
                   2 Subgenus Cryptomphalus Agassiz, 1837
                   3 Subgenus Idiomela Cockerell, 1921
                   4 Subgenus Maltzanella Hesse, 1917
                   5 Subgenus Naegelea Hesse, 1918
                   6 Subgenus Pachyphallus Hesse, 1918
                   7 Subgenus Physospira Boettger, 1914
                   8 Subgenus Rhododerma Hesse, 1918
                   9 Subgenus Tyrrhenaria Hesse, 1918