Phylum Mollusca Linnaeus, 1758 - molluscs Class Gastropoda Cuvier, 1795 - snails and slugs Subclass Opisthobranchia Milne-Edwards, 1848 - opisthobranchs see Order Opisthobranchia Milne-Edwards, 1848 Order Nudibranchia Cuvier, 1814 - "true" nudibranchs Suborder Arminina Odhner, 1934 Superfamily Arminoidea Iredale & O'Donoghue, 1923 (1841) Family Arminidae Iredale & O'Donoghue, 1923 (1841) Genus Armina Rafinesque, 1814