No exumbrellar nematocysts. Small nematocysts on the lips. Gonads already well-grown and eggs clearly visible. Manubrium cruciform, lips more evident and starting to bend upwards. Tentacular bulbs still round, tending to elongate in conformity with the origin of the tentacles.
Adult specimens dome-shaped, with gonads almost in the middle of the radial canals.
The shape of the medusae is variable. The stomach, filled with food, almost reached the velar opening. The reared specimens lived up to three months and continued their development also after reaching sexual maturity. Some specimens were already mature 10 days after liberation. They released their gametes and developed a new gonad.