328 ALUS. [Vol. XVIII. 



EXPLANATION OF PLATE XIL 



Fig. 64. Lateral view of the brain, showing the apparent origins of the 

 cranial nerves. X 3. 



Fig. 65. Ventral view of the same. X 3. 



Fig. 66. Lateral view of a part of the side of the head, showing the eye- 

 ball pushed forward and the trigeminofacial chamber opened so as to ex- 

 pose the issuing nerves. The truncus hyoideo-mandibularis facialis is 

 turned upward against the side wall of the skull. X 4. 



Fig. 67. Lateral view of the membranous ear. X 3. 



Fig. 68. Mesial view of the membranous ear. X 3. 



