having complete gills or branchial apparatus: opposed to hemibranchiate.

Having pouched gills. Formerly also: relating to or belonging to the class Marsipobranchii.

= marsipobranch, adj.

= holobranchious adj.

having pouch-like gills, as characteristic of lampreys and hagfishes; = marsipobranch, adj.

= marsipobranch, adj.