Totton, 1954
The lateral ridges bifurcate relatively close to the apex of the anterior nectophore, and the resulting dorso-laterals do not end, basally, in pronounced teeth. The hydroecium stretches up almost to the same level as the apex of the nectosac. Main body of the somatocyst globular with a narrow canal, that may bear side branches, running up to the apex of the nectophore. In the posterior nectophore the mouth plate bears 2, only slightly asymmetric teeth.