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
         Suborder Mesurethra [monotypic]
           Superfamily Clausilioidea Gray, 1855 [monotypic]
             Family Clausiliidae Gray, 1855
               Subfamily Neniinae Wenz, 1923
                 Genus Nenia Adams & Adams, 1855
                   1 Subgenus Neniops Pilsbry, 1926
                   2 Subgenus Nenisca Rehder, 1939
                   3 Subgenus Paranenia Rehder, 1939