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Updated: May 25, 2025
It is not strange that the relation between the various phases of this extraordinary series of metamorphoses, so different from each other in their external aspects, should not have been recognized at once, and that this singular Acaleph should have been called Scyphostoma in its simple Hydroid condition, Strobila after the transverse division of the body had taken place, Ephyra in the first stages of its free existence, and Aurelia in its adult state, being thus described as four distinct animals.
In this condition the young Jelly-Fish has been described under the name of Scyphostoma. As soon as this wreath of tentacles is formed, a constriction takes place below it, thus separating the upper portion of the animal from the lower by a marked dividing-line.
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