118 



FISHES. 



other by a transverse canal, crossing the cranial cavity below 

 the brain. 



•S p< 



§1 





5 





p* ^ 'S 



o3 o 



^ rS **^ 



3 PM a 



g I '•-"' 



bo "J." 



S S g; 



= ^ ja ■ 



.S «= -o 



? - .fcl ■ 



Pi 

 a 



a 



■a 





I 



,1^ J 



60 -a .„ 

 .« -9 fl 



1^ 



I 



f> +3 SI, 



The connection is effected by means of a chain of ossicles 



