Holocephali

Sub-order of Selachii, including forms having large eyes without lids, and a small mouth under the snout, with four teeth above and two below. The skin is naked, there palatine (palato-quadrate) bar is firmly fused to the skull, and are no spiracles, and only one gill-slit on each side. The maxillodibular) of the skull. They lay eggs in horny cases. the lower jaw articulates with a styliform proce (hyomanCHIMÆRA (q. v.) or Sea-Cat is an example. The