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Mol"lusc (?), n. (Zoöl.)
Same as Mollusk.

||Mol*lus"ca (?), n. pl. [NL. See
Mollusk.] (Zoöl.) One of the grand divisions
of the animal kingdom, including the classes Cephalopoda, Gastropoda,
Pteropoda, Scaphopoda, and Lamellibranchiata, or Conchifera. These
animals have an unsegmented bilateral body, with most of the organs
and parts paired, but not repeated longitudinally. Most of them
develop a mantle, which incloses either a branchial or a pulmonary
cavity. They are generally more or less covered and protected by a
calcareous shell, which may be univalve, bivalve, or
multivalve.

&fist; Formerly the Brachiopoda, Bryzoa, and Tunicata were united
with the Lamellibranchiata in an artificial group called Acephala,
which was also included under Mollusca. See Molluscoidea.

Mol*lus"can (?), a. (Zoöl.)
Of or pertaining to mollusks. -- n.
A mollusk; one of the Mollusca.

Mol*lus"coid (?), a. [Mollusca +
-oid.] (Zoöl.


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