Russell, 1953
Trachymedusae with narrow manubrium; with or without peduncle; usually with 8, rarely more, radial canals; without centripetal canals; marginal tentacles evenly distributed, sometimes of two kinds, each tentacle of uniform structure; gonads on radial canals or hanging in pouches into subumbrellar cavity; free, rarely enclosed, ecto-endodermal statocysts.
Genus Aglantha
Genus Aglaura
Genus Amphogona
Genus Arctapodema
Genus Colobonema
Genus Crossota
Genus Homoeonema
Genus Pantachogon
Genus Persa
Genus Ransonia
Genus Rhopalonema
Genus Sminthea
Genus Tetrorchis