cerato-

The cerato-hyals of the two sides are commonly united by a median ventral plate, the basi-hyal.

The posterior surfaces of both hyomandibular and cerato-hyal bear slender cartilaginous processes, the gill rays.

Each rod is divided into a dorsal portion, the hyomandibular and a ventral portion, the cerato-hyal.

The last two pairs of hypo-branchials and the fifth cerato-branchials are connected with a broad median plate, the basibranchial.

The epi-branchials and cerato-branchials bear gill rays along their posterior borders.