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COMPARATIVE MORPHOLOGY OF VERTEBRATES. 



FiG. 167. Brain and cranial nerves of Carcharias littoralis (Princeton 310) , natural size. 

 bo, olfactory bulb; br 1 -*, branchial nerves; cr, corpus restiforme; d, diencephalon; e, epi- 

 physis; ec, external canal of ear; er, external rectus; eo, external oblique; Am, hyomandibular 

 nerve; /, lateralis nerve; md, mandibularis nerve; ws, mesencephalon, also, maxillaris 

 superior; oo, olfactory organ; os, ophthalmicus superficialis nerve; ot, olfactory tract: pal, 

 palatine nerve; PC, posterior canal; po, post-trematic branch; pr, pretrematic branch; so, 

 superior oblique; sr, superior rectus, t, telencephalon ; u, utriculus; v, visceral branch of X; 

 I-X, cranial nerves. 



