45 



SCYLLIUM 



15. Cranium, ventral view : nasal capsules ; median ethmoid; groove for carotid artery ; foramina for external 

 carotid, internal carotid and nerves IX and x ; auditory capsules ; occipital condyles ; foramen magnum. 



Mb 



16. Jaws and branchial arches, ventral view : palato-pterygo-quadrate bar ; lower jaw ; ethmopalatine ligament ; 

 hyomandibula ; ceratohyal ; basihyal ; ceratobranchials i 5 ; basibranchials. 



12 



