01 n. pl. A division of hydroids comprising those which have the hydranths in thecae and the gonophores in capsules. The campanularians and sertulari…
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1.
A division of hydroids comprising those which have the hydranths in thecae and the gonophores in capsules. The campanularians and sertularians are examples. Called also Thecata. See Illust. under Hydroidea.(Zool.) Also: Thecata See: Hydroidea