(Chamisso and Eysenhardt, 1821)
Umbrella 10-30 mm wide, hemispherical; manubrium on gastric peduncle of varying size; mouth with 4 lips; 1-3 (or more) centripetal canals in each quadrant; 4 long hollow perradial tentacles with cnidocyst rings and 4 small solid interradial tentacles with adaxial cnidocyst clusters; gonads variable in shape and size; 8 statocysts.