hydrotheca
From ZooTerms (Dictionary of Invertebrate Zoology)
Revision as of 14:28, 10 September 2013 by Andreas Plank (Talk | contribs) (1 revision: noun simple (largest file 2.4MB))
hydrotheca (noun; Greek hydor, water; theke, case): (Cnidaria: Hydrozoa) Peridermal cups into which most or all of the hydranth can retract, may be provided with an operculum; in some Thecata, the cup may be reduced to a mere platform supporting the hydranth.
