Cnidaria Hatschek, 1888 - cnidarians Class Anthozoa Ehrenberg, 1831 Order Ceriantharia Family Cerianthidae Milne Edwards & Haime, 1851 Genus Cerianthus Chiaje, 1830 1 Cerianthus membranaceus (Spallanzini, 1784) Haime, 1854