What does anthobranchia mean?
The definition of anthobranchia
An`tho*bran”chi*a, n. pl.
Etym: [NL., fr. Gr. (Zoöl.)

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.