Vanhöffen, 1911
With 1 interradial blind centripetal canal in each quadrant; with 8 long perradial and interradial tentacles and up to 40 smaller marginal tentacles of varying length. Umbrella up to 16 mm wide and high, almost spherical, mesoglea thick; 4 radial canals, connected to manubrium by mesenteries; base of tentacles adnate on exumbrella; gonads interradial, with 8 adradial rows, each with about 16 transverse folds.