Ceriantharia (Cnidaria) from Australia, New Zealand and Antarctica with Descriptions of Four New Species Stampar, Sérgio N. Mills, V. Sadie Keable, Stephen J. Records of the Australian Museum 2020 2020-07-29 72 3 81 100 Roule, 1904 Roule 1904 [317,749,441,473] Anthozoa Cerianthidae Pachycerianthus Animalia Ceriantharia 2 83 Cnidaria genus    Typespecies.  Pachycerianthus multiplicatus Carlgren, 1912(see details in Kelly & Keegan, 2000).   Diagnosis( sensu Arai, 1965). Cerianthidaewith second couple of protomesenteries short and sterile. Arrangement of mesenteries in each quartette M,B,m,b (1,3,2,4), more or less distinct.   Distribution. This genus is distributed worldwide.