Ceriantheopsis Carlgren, 1912

Stampar, Sérgio N., Mills, V. Sadie & Keable, Stephen J., 2020, Ceriantharia (Cnidaria) from Australia, New Zealand and Antarctica with Descriptions of Four New Species, Records of the Australian Museum 72 (3), pp. 81-100 : 88

Genus Ceriantheopsis Carlgren, 1912

Type species. Ceriantheopsis americana (Agassiz in Verrill, 1864) by subsequent designation ( Carlgren, 1912, p. 24).

Diagnosis. Cerianthids with alternating sterile and fertile mesenteries. Second protomesenteries fertile, reaching aboral pole. Metamesenteries arranged in mBMb. Length of all but M-metamesenteries diminishes toward multiplication chamber. Length of M-metamesenteries of first 2–4 quartets can increase toward the multiplication chamber. M3 and further mesenteries can diminish in length towards multiplication chamber ( Carlgren, 1912).

Distribution. Previously restricted to the Atlantic Ocean (Caribbean Sea, Gulf of Mexico, US Coast and South Africa Coast), expanded in this study to the South Pacific with the description of a new species.