Bougainvillia platygaster

(Haeckel, 1879)

Basal trunk of oral tentacles short. Umbrella 12 mm wide and high, globe-shaped to cubic, with thick walls, flat top, mesoglea thick; exumbrella with perradial notches; manubrium quadrangular, very flat, 4 times wider than high; oral tentacles divided 5-6 times almost from base; gonads flat, as interradial pads; marginal bulbs triangular, with 10-13 short tentacles; ocelli crescent-shaped; medusa buds produced directly from manubrium or from polypoid structures developed on manubrium.

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