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Keywords from Image Description:
The Monograph of the Gymnoblastic or Tubularian Hydroids. Plate III. Cordylophora caspia Hydrozoa Anthoathecatae Filifera Oceaniidae portion of female colony magnified very young gonophore gonophore more advanced containing ova which are embraced by the branches of ramified spadix and have their germinal vesicles distinct gonophore