Totton, 1954
The two nectophores, both with a functional flask-shaped nectosac, fit together to form a ball-like structure. The larval nectophore has a large, often swollen somatocyst, while that of the definitive one is minute. The radial canals on the nectosac of the larval nectophore are highly branched near their bases, and those of the definitive one also show some branching. Small, spherical bract with 2 recurved hydroecial canals.