from the GNU version of the Collaborative International Dictionary of English
- n.pl. The Athecata; -- so called because the medusoid buds are not inclosed in a capsule.
from The Century Dictionary and Cyclopedia
- In Allman's system, an order of hydroid polyps, corresponding to the Anthomedusæ of Haeckel's later system, and commonly known as tubularian hydroids (in distinction from both campanularian and sertularian hydroids, which are calypto blastic).
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