Gastropoda Cuvier, 1795 see Class Gastropoda Cuvier, 1795 Sacoglossa Ihering, 1876 see Order Sacoglossa Ihering, 1876 Limapontioidea Gray, 1847 Family Limapontiidae Gray, 1847 Genus Placida Trinchese, 1876 1 Placida tardyi (Trinchese, 1873) 2 Placida verticilata Ortea, 1981