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A sexual zooid produced as a medusoid bud upon a hydroid, sometimes becoming a free hydromedusa, sometimes remaining attached. See Hydroidea, and Illusts. of Athecata, Campanularian, and Gonosome.

The part which in some Siphonophora bears the male gonophores.

A reproductive bud of a hydroid; a simple gonophore.

certain hydroids (Thecaphora), inclosing the blastostyle upon which the medusoid buds or gonophores are developed; -- called also gonangium, and teleophore. See Hydroidea, and Illust. of Campanularian.

A sexual zooid, or medusoid bud of a hydroid; a gonophore. See Hydroidea, and Illust. of Campanularian.

ked-eyed medusæ; the hydromedusæ. Most of them are known to be the free-swimming progeny (gonophores) of hydroids.

One of the branches bearing the female gonophores, in certain Siphonophora.

The quality of having similar sexual zooids or gonophores and dissimilar hydrants; -- said of certain hydroids.

A kind of gonophore produced by hydroids of the genus Gonothyræa. It has tentacles, and otherwise resembles a free medusa, but remains attached by a pedicel.

fundamental structure of a medusa, but without a locomotive disk; -- said of the sessile gonophores of hydroids. -- n.

The middle layer of the gonophore in the Hydrozoa.

A sac which surrounds the generative bodies in the gonophore of a hydroid.

Any free-swimming gonophore of a hydroid; a hydroid medusa.

Permanently attached; -- said of the gonophores of certain hydroids which never became detached.

A hydrozoan reproductive zooid or gonophore which does not become medusoid in form or structure. See Illust. under Athecata.

A division of hydroids comprising those which have the hydranths in thecæ and the gonophores in capsules. The campanularians and sertularians are examples. Called also Thecata. See Illust. under Hydroidea.

, naked, flowerlike hydranths at the summits of long, slender, usually simple, stems. The gonophores are small, and form clusters at the bases of the outer tentacles.