from the GNU version of the Collaborative International Dictionary of English

  • A division of acalephs, including Lucernaria and allied genera; -- called also Calycozoa.
  • A more extensive group of acalephs, including both the true Lucernarida and the Discophora.

from The Century Dictionary and Cyclopedia

  • A subclass of Hydrozoa, in which the base of the hydrosome is developed into an umbrella in the walls of which are the reproductive organs.


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