488 



COMPARATIVE ANATOMY 



Fig. 404. — Brain and cranial nerves of Carcharias littoralis (Princeton 310), natural 

 size, bo, olfactory bulb; br^~*, branchial nerves; cr, auricle of medulla; d, diencephalon; 

 e, epiphysial staUc, the pineal organ lacking; ec, external canal of ear; er, external 

 rectus; eo, external oblique; hm, hyomandibular nerve; io, inferior oblique; I, lateralis 

 nerve; tnd, mandibularis nerve; ml, myelencephalon; ms, mesencephalon, also, maxillaris 

 superior; ml, metencephalon; 00, olfactory organ; os, ophthalmicus superficialis nerve; 

 ol, olfactory tract; pal, palatine nerve; pc, posterior canal; po, posttrematic branch; pr, 

 pretrematic branch; so, superior oblique; sr, superior rectus; I, telencephalon; u, 

 utriculus; V, visceral branch of X; I-X, cranial nerves. (From Kingsley's "Compara- 

 tive Anatomy of Vertebrates.") 



