jugostegalia

the name given to the numerous rib-like osseus supports in the outer ventral walls behind the branchiostegals of the branchial chamber of the eel, Myrophis. Not regarded as homologous with branchiostegals and considered as structural supports of the prolonged branchial cavity. Other authors regarded them as homologous, defining them as those secondary, multiplied, overlapping and free (from the hyoid arch) branchiostegals found in certain anguilliforms. The term accessory branchiostegal rays is preferred by some authors to jugostegalia, although uncertain as to their homology. Characteristic of the anguilliform familes Echelidae, Ophichthidae and Neenchelyidae. Also called jugostegal rays