germarium

from The Century Dictionary.

• noun The proper ovarium or ovary of some of the lower animals, as the rhabdocœlous turbellarians and trematoid worms, which evolves the ova, as distinguished from the vitellarium.

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

• noun (Zoöl.) An organ in which the ova are developed in certain Turbellaria.

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

• noun biology The parts of an ovary and testis (in Rotifera etc) that produces eggs and sperm respectively