Characters;"Ceriantheomorphe brasiliensis";"Ceriantheomorphe adelita sp. nov.";"Ceriantheomorphe ambonensis"
"Number of marginal tentacles";132–392;192–352;48**-150*
"Number of labial tentacles";108–384;144–336;72**-150*
"Tentacular cycles";4;4;3*
"Arrangement of marginal tentacles";(1)1123...;(?)1122...;(0)112...**
"Arrangement of labial tentacles";(1)1122…;(?)1122…;(0)112…**
"Proportion between pharynx in relation to body length";8–27%;21%;18%**
Siphonoglyph;"Two pairs of mesenteries connected";"Three pairs of mesenteries connected";"Three pairs of mesenteries connected**"
"Proportion of gastrovascular cavity in relation to body length";33–72%;56%;55%**
"Ratio between mesenteries";"1.2–3.1% (B × b); 1.1–3.1%(m × M)";"3% (B × b); 2.7–5.2% (m × M)";"4% (B × b); 2.2–3.5% (M × m)**"
"P1 (directive mesenteries)";"Longer than P3, P5, betamesenteries (B and b) and metamesenteries (m), except for m of the 2nd and 3rd cycles. Shorter than P2, P4 and metamesenteries (M).";"Longer than betamesenteries (B and b) and metamesenteries (m). Shorter than P2, P3 and metamesenteries (M).";"Shorter than mesenteries.**"
P2;"Longer than mesenteries";"Longer than mesenteries";"Longer than mesenteries"
P3;"Longer than P5, betamesenteries (b) and betamesenteries (B), except for B of the 1st and 2nd cycles. Shorter than directive mesenteries, P2, P4 and metamesenteries (M and m).";"Longer than directive mesenteries, betamesenteries (B and b) and metamesenteries (m). Shorter than P2 and metamesenteries (M).";"Longer than directive mesenteries and betamesenteries (B and b). Shorter than P2 and metamesenteries (M and m)."
P4;"Longer than directive mesenteries, P3, P5, betamesenteries (B and b) and metamesenteries (m), except for m of the 2nd cycle. Shorter P2 and metamesenteries (M).";Absent;Absent
P5;"Longer than betamesenteries (b) and betamesenteries (B), except for B from 1st to 4th cycles. Shorter than directive mesenteries, P2, P3, P4 and metamesenteries (M and m).";Absent;Absent
"Proportion of directive mesenteries in the gastrovascular cavity";36.6%;30.5%;2.3%**
"Proportion of protomesenteries P2 in the gastrovascular cavity";88.8%;92.5%;85.7%
"Proportion of protomesenteries P3 in the gastrovascular cavity";12.2%;56.4%;14.2%
"Proportion of protomesenteries P4 in the gastrovascular cavity";38.8%;Absent;Absent
"Proportion of protomesenteries P5 in the gastrovascular cavity";11.1%;Absent;Absent