Cuvier, 1817
Anterior nectophores with 5 complete longitudinal ridges. There are 3 prominent ostial teeth, although in one species the dorsal one is obscured. Deep hydroecium, only a small basal portion of which may open ventrally. Posterior nectophore, when developed, also with 3 ostial teeth, but again the dorsal may be obscured. Long apical process (apophysis) that is inserted into hydroecium of anterior nectophore. Bracts generally helmet-shaped, although flattened in one species. There are 4 recognised species, all of which have been found in the area under investigation.
Diphyes antarctica
Diphyes bojani
Diphyes chamissonis
Diphyes dispar