Category:Hydrobranchiata

Hy`dro*bran`chi*a"ta, n. pl. Etym: [NL., fr. Gr. "y`dwr water + (Zoöl.)

Defn: An extensive artificial division of gastropod mollusks, including those that breathe by gills, as contrasted with the Pulmonifera. -- Hy`dro*bran"chi*ate, a.