\An`tho*bran"chi*a\, n. pl. [NL., fr. Gr. 'a`nqos
flower + ? gills, n. pl.] (Zo["o]l.)
A division of nudibranchiate Mollusca, in which the gills
form a wreath or cluster upon the posterior part of the back.
See {Nudibranchiata}, and {Doris}.