Phylum [Mollusca] Linnaeus, 1758 - molluscs Class Gastropoda Cuvier, 1795 - snails and slugs Subclass Pulmonata Cuvier, 1814 - land snails and slugs see Order Pulmonata Cuvier, 1814 Order Stylommatophora Schmidt, 1855 see Infraorder Stylommatophora Schmidt, 1855 Superfamily Helicacea see Superfamily Helicoidea Rafinesque, 1815 Family Bradybaenidae Pilsbry, 1934 (1898) Genus Helicostyla Férussac, 1821