Margulis, 1988
Anterior nectophore up to 20 mm in height, but usually much smaller (7-8 mm). Mouth plate almost completely divided; hydroecium usually extending to half the height of the nectophore, and without flaps. The central third of the somatocyst is regularly, but variably, expanded. Posterior nectophore with simple somatocyst; no finger-like processes in hydroecium, whose left lateral wing is entire.