\lu`cer*nar"i*da\, n. pl. [NL. See {Lucernaria}.]
(Zo["o]l.)
(a) A division of acalephs, including {Lucernaria} and allied
    genera; -- called also {Calycozoa}.
(b) A more extensive group of acalephs, including both the
    true lucernarida and the Discophora.