Anthobranchia :: Anthobranchia (n. pl.) 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..
Aspidobranchia :: Aspidobranchia (n. pl.) A group of Gastropoda, with limpetlike shells, including the abalone shells and keyhole limpets..
Branchia :: Branchia (n.) A gill; a respiratory organ for breathing the air contained in water, such as many aquatic and semiaquatic animals have..
Cryptobranchiate :: Cryptobranchiate (a.) Having concealed or rudimentary gills.
Cyclobranchiate :: Cyclobranchiate (a.) Having the gills around the margin of the body, as certain limpets..
Dermobranchiata :: Dermobranchiata (n. pl.) A group of nudibranch mollusks without special gills.
Dermobranchiate :: Dermobranchiate (a.) Having the skin modified to serve as a gill.
Dibranchiata :: Dibranchiata (n. pl.) An order of cephalopods which includes those with two gills, an apparatus for emitting an inky fluid, and either eight or ten cephalic arms bearing suckers or hooks, as the octopi and squids. See Cephalopoda..
Dorsibranchiata :: dorsibranchiata (n. pl.) A division of chaetopod annelids in which the branchiae are along the back, on each side, or on the parapodia. [See Illusts. under Annelida and Chaetopoda.].
Dorsibranchiate :: Dorsibranchiate (a.) Having branchiae along the back; belonging to the Dorsibranchiata.