Totton, 1941
Anterior nectophore with 5 complete ridges. The basal parts of the lateral ridges bend sharply dorsad. Small, broad mouth plate, with hydroecium extending to ostial level. Elongate somatocyst, somewhat variable in shape, extending to a quarter to a half the height of the nectophore. Posterior nectophore and eudoxid stage have not been described.