Table 3. Comparison of anatomical features of Cerianthus species. SpeciesDirective mesenteries lengthDirective labial tentacleM-mesentery (M1) lengthM-mesentery (M2) lengthM-mesentery (m1) lengthM-mesentery (m2) lengthMesenteries attached to siphonoglyphSiphonoglyph shapeNumber of marginal tentaclesC. andamanensis--Reach aboral pore-----~160C. bathymetricus--Reach aboral pore1/2 of M-1---Wide?28C. filiformis> stomodeumPresentReach aboral pore6/8 of M-17/8 of M-15/8 of M-16Wide?~70C. incertus--------38-42C. japonicus> stomodeumPresentAlmost reach aboral pore≅ M-13/4 of M-1~1/2 of M-14?Wide65C. lloydii> stomodeumPresentAlmost reach aboral poreLonger than M-11/5 of M-11/6 of M-14NarrowUp to 70C. malakhovi?Half column (?)> M-1????~160C. medusula????????FewC. membranaceus> stomodeumPresentAlmost reach aboral pore≅M-1≅P2≅m-16Narrow140C. mortenseni>stomodeumPresentShort, almost half of gastrovascular cavity≅ M-13/4 of M-11/2 of M-18Wide125C. punctatus> stomodeumPresentAlmost reach aboral pore=M-12/3 of M-11/4 of M-16Rather wide80-90C. roulei??Long??????~40C. stimpsonii?????????C. sulcatus> stomodeumPresentReach aboral pore≅M-1???Narrow~180C. taedus> stomodeumPresentShort?Short???Narrow55C. valdiviae≅stomodeumAbsentShort?=M-1≅M-11/2 of M-14Narrow35C. vas?????????C. vogti> stomodeumPresent(?)Almost reach aboral pore(?)Longer than M-1(?)1/5 of M-1(?)1/6 of M-1?Narrow30-40

Published as part of Stampar, Sergio N., Reimer, James D., Maronna, Maximiliano M., Lopes, Celine S. S., Ceriello, Hellen, Santos, Thais B., Acuna, Fabian H. & Morandini, Andre C., 2020, Ceriantharia (Cnidaria) of the World: an annotated catalogue and key to species, pp. 1 in ZooKeys 952 on page 1, DOI: 10.3897/zookeys.952.50617