Uchida, 1927
Anthomedusae without apical projection; without cnidocyst tracks; with simple circular mouth; with gonads surrounding manubrium; 4 radial canals; with solid, generally moniliform tentacles in marginal clusters, or at different levels on exumbrella; without ocelli. Two genera: Margelopsis (with 4 marginal perradial clusters of tentacles), and Octobulbacea (with 8 marginal clusters of tentacles, 4 perradial and 4 interradial).
Genus Margelopsis
Genus Octobulbacea