Athecata :: Athecata (n. pl.) A division of Hydroidea in which the zooids are naked, or not inclosed in a capsule. See Tubularian..

Spermatheca :: Spermatheca (n.) A small sac connected with the female reproductive organs of insects and many other invertebrates, serving to receive and retain the spermatozoa..

Spermathecae :: Spermathecae (pl. ) of Spermathec.

Tetrathecal :: Tetrathecal (a.) Having four loculaments, or thecae..

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