PLATE III 



The Eyes of Axukans 



Fk;. 1. — The fundus ot the frog. Barm leinpornria. 



Fig. 2. — The iris of the giant toad, Biifo Niarunis Fig. 3. — The iris of the common frog, Bana 

 (blood flow shoA\-n by arrows) (Ida Mann). teniporariu (Ida Mami). 



Fig. 4. — The ui.s ot ih .\laiayan tree-frog. Fig. 5. — The iris ui Whites tree-frog, Hyla 

 Bhacophorus leiicninijstax (Ida Mann). coenilea (Ida Mann). 



S.O. — VOL. I 



[To face p. 342. 



