AMPHIBIA. 59 



PLATE XVI. 



A GENERAL VIEW OF THE NERVES OF THE 



(TESTUDO MYDAS.) 



' - / ' * _- . .. . . . , . , i 



Ox the right side, the bones and muscles of the shoulder and pelvis have been 

 almost altogether removed for allowing a view of the nerves. 



1. Hard portion of the seventh nerve. 



2. Trunk of the par vagum ; on each side it sends a large branch to the larynx, 



and smaller branches to the pharynx and oesophagus; at the bottom of the 

 neck, it leaves the sympathetic nerve ; it then gives -off recurrent branches 

 to wind round each aorta to the oesophagus and trachea ; it sends a branch 

 on each side to the ventricles of the heart, and others along the large vessels 

 towards the auricles ; and many branches to each lung and the stomach. 



3. Laryngeal branch from the right trunk of the par vagum ; it gives branches 



to the muscles of the glottis, the membrane covering this, and to the 

 oesophagus ; also one distributing filaments on the carotid artery and sur- 

 rounding parts, and then rejoining the trunk of the par vagum.. 



4. Recurrent branches of the right trunk of the par vagum to the trachea and 



oesophagus. 



5. Glosso-pharyngeal nerve ; it gives a branch to the hyo-maxillary muscle 



arising from the lower jaw, and inserted into the posterior cornu of the 



i 2 



