Phylum Mollusca Linnaeus, 1758 - molluscs
   Class Gastropoda Cuvier, 1795 - snails and slugs
     Subclass Prosobranchia Milne-Edwards, 1848 - prosobranchs see Class Gastropoda Cuvier, 1795
       Superorder Archaeogastropoda Thiele, 1925
         Order Vetigastropoda Salvini-Plawen, 1980 - archaeogastropods s.l.
           Suborder Neritopsina Cox, 1960 see Order Neritopsina Cox & Knight, 1960
             Superfamily Helicinoidea Férussac, 1822
               Family Helicinidae Férussac, 1822 - helicinids
                 Subfamily Vianinae Baker, 1922
                   Genus Lucidella Swainson, 1840
                     1 Subgenus Perenna Guppy, 1867
                     2 Subgenus Poenia Adams & Adams, 1856
                     3 Subgenus Poeniella Baker, 1923