生卵膜的

Nidamental \Nid`a*men"tal\, a. [L. nidamentum materials for a
nest, fr. nidus nest. See {Nest}.] (Zo["o]l.)
Of, pertaining to, or bearing, eggs or egg capsules; as, the
nidamental capsules of certain gastropods; nidamental glands.
See Illust. of {Dibranchiata}.