MR. W. K. PARKER ON THE SKULL IN THE BATRACHIA. 



PLATE 5. 



Figures. 



1 (p. 37) 



2 

 3 

 4 

 5 



6 (p. 35) 



7 

 8 

 9 



10 



11 (p. 43) 



12 

 13 

 14 

 15 



Skull of Rana halecina. — Tmmatui-e male; length If inch. 

 North America. Upper view, with investing bones 

 removed from right side 



The same. Lower view 



Mandible of same. Side view 



Half of hyo -branchial plate of same 



The same. Columella and stapes. Outer view .... 



Skull of JRana palustris, Cambridge, Mass., U.S. — Newly 

 metamorphosed; 11 lines long. Upper view, with 

 investing bones removed from riglit side 



The same. Lower view 



The same. Mandible. Side view 



The same. Hyo-branchials. Upper view 



The same. Columella and stapes. Outer view. . . . 



Skull of Rana pygmaa. — Adult male; ^ inch long. Ana- 

 mallays Mountains, Malabar, S.W. Lidia. Upper view. 



The same. Lower view 



The same. Mandible. Outer view 



The same. Hyo-branchials {half) 



The same. Columella and stapes. Outer view .... 



Number of 



times 

 magnified. 



b 

 5 

 5 

 5 

 10 



n 

 n 

 n 



7i 



15 



10 

 10 

 10 

 10 



20 



