Geryonia teraphylla Chamisso and Eysenhardt, 1821, Indian Ocean.
OTHER COMMON NAMES None known.
Umbrella 0.39-1.1 in (10-30 mm) wide, hemispherical, apex somewhat flattened; mesoglea thick, rigid; velum broad; manubrium small, on long, cylindrical gastric peduncle, longer than umbrellar diameter; mouth with four simple lips lined with cnidocysts; with normally four radial canals (sometimes more); 1-7 centripetal canals in each quadrant; with marginal cnidocyst ring; typically four long hollow perradial tentacles with cnidocyst rings and four small solid interradial tentacles with adaxial cnidocyst clusters; with gonads variable in shape and size, generally heart shaped, on either side of the middle of radial canals; eight statocysts. Extremely variable species.
Worldwide distribution, common in temperate regions of all
Not listed by the IUCN.
SIGNIFICANCE TO HUMANS None known. ♦
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