Un 
Fic. 
Fic. 
xX 1%. 
FIG. 
Fic. 
’ Fic. 
x 1%. 
Fic. 
Fic. 
oS 
ALLIS. 
EXPLANATION OF PLATE XxX. 
Side view of complete skull of adult Amia. xX 1%. 
Side view of pterygo-palatine arch, hyoid arch, and Meckel’s cartilage. 
Side view of quadrate. X 1¥4. 
Side view of symplectic. X 1%. 
Inside view of upper end of hyoid arch with opercular bones attached. 
Inside view of right mandible. x 1%. 
The same with splenial removed. X 14. 

