Lens and van Riemsdijk, 1908
Lateral ridges bifurcate relatively further away from the apex of the anterior nectophore, and dorso-laterals end, basally, in distinct teeth. Hydroecium reaches to only a little over half the height of the nectosac. Main body of somatocyst consists of 2 broad wings, of variable extent, with simple canal running up from it to apex of nectophore. Mouth plate of posterior nectophore bearing 2, distinctly asymmetrical teeth.