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 Trochomorphidae Möllendorff, 1890
Genus Videna Adams & Adams, 1855
Subgenus Periryua Baker, 1941