(Forskål, 1775)
Umbrella up to 25 mm wide and 40 mm high, bell-shaped, with variable apical projection; mouth with very complexly folded and crenulated lips; mesenteries about half as long as manubrium; radial canals broad with short, sometimes branched lateral diverticula; up to 90 (usually 60-80) marginal tentacles, densely crowded, marginal bulbs clasping exumbrella but not forming conspicuous abaxial spurs; without ocelli.