Branchiostegal
Branchiostegal ({not transcribed}) , adjective
[Greek {not transcribed} gill + {not transcribed} to cover: compare French branchiostège.]
(Anatomy) Pertaining to the membrane covering the gills of fishes.
(Anatomy) A branchiostegal ray. See Illustration of Branchial arches in Appendix.
This term was formerly applied to a group of fishes having boneless branchia. But the arrangement was artificial, and has been rejected.