C 45 > 



Reptttia ec Pisces. Reptilia et Pisces auricu- 

 lam externatn non posfident; in crocodilo vero 

 eius cypuni quafi inveniri deinde videbimus. 



. XXIX. 

 Meatus audltorlus externus. 



Mammalia.- In fimiis fapagous diccis et cbei- 

 ropreris meatus audicbrius externus brevis est ec 

 cyiindncus. In carnivoris eius directio genera- 

 tirn eschoriz;;ntalis. In ornithorhynchp patadoxo 

 (i) ec hystrice (2^); canalis est longus ec 

 convolutus. Cetaceorum raeams audicorius ex- 

 ternus canalis esc carcilagineus osfea parce or- 

 bacus, tenuis v a fuperficie inrerna cucis incipi* 

 ens ec per Jardum usque ad rympani membranam 

 penetrans (3); Cel. Home ilium in balaena a 

 |jedes 6 pollices longum invenic (4). 



Ayes. In avibus repericur meatus auditori- 



us 



(1) Home Phil, transact. 1802, there is a car- 

 tilaginous canal \ the fize of a crow-quill ^ winding 

 round the fide of the head , upon the outside of the 

 temporal muscle , leading to the orifice in the tem- 

 poral bone" 



(2) lucm ibidem p. 355. 



^3) Camper Verliand. der Holl. Maatfch. te Haar- 

 lem D. XVII. 2, ft. Tab. I. a. v. e. c. et Tab. II. fig. 

 2. F G I. 



(4) Home Phil. _trans. 1812 p. 84. a. 



