Diagnosis

provided by World Register of Marine Species
Umbrella much reduced and fused to manubrium so that tentacles and statocysts are arranged around oral end of manubrium; one ring of marginal tentacles of two kinds: adhesive and armed ones; with or without a brood pouch (= subumbrellar cavity); hermaphroditic, viviparous.
license
cc-by-4.0
copyright
WoRMS Editorial Board
bibliographic citation
Schuchert, P.
contributor
Schuchert, Peter, P.