Fewkes, 1882
Umbrella 30-40 mm wide, thick, disk-like, with small apical projection; 8 clusters of gelatinous papillae above margin, mouth wide circular opening; 8 broad, band-like, radial canals; broad circular canal; gonads flattened, extending along almost entire length of radial canals; tentacles up to 640; 3-4 statocysts in each octant.