362 



MECHANICAL AND ACOUSTICAL SENSES 



corpus 



B 



LATERAL-LINE 



LABYRINTH 



LATERAL-LINE 



Sense organs 



AURICLE 



OCULOMOTOR 

 NUCLEUS 



CORPUS 



Cerebellum 



BRAIN 

 STEM 



SPINAL CORD 



Motor centres 



Figure 19 (A) Four representative transverse sections cut through the hind brain of 

 Scyliorhinus to show schematically the projections of nerves VII, VIII, and X. (B) Sche- 

 matic showing the relationship of the acoustico-lateralis sense organs, the components of 

 the cerebellum, and the motor centres of the selachian brain. 



