Totton, 1941
Anterior nectophore with several ridges, only 5 of which reach the apex. The dorso-lateral ridges connect with a transverse velar ridge. Large mouth plate with hydroecium extending up to ostial level and open ventrally. Long, slender somatocyst extending to one third the height of the nectophore. Posterior nectophore and eudoxid stage have not been described.