gonotheca

from The Century Dictionary.

• noun The chitinous receptacle within which the gonophores of certain hydrozoans are produced: same as gonangium.

from the GNU version of the Collaborative International Dictionary of English.

• noun (Zoöl.) A capsule developed on 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.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun biology the protective covering of a gonangium