Fig. IV. 



Intestinal Tract of Nycticorax griseus. 

 C.C., single colic caecum characteristic of Herons ; Ic. 1 and Te. 2, supra-cascal kinks. Other lettering as before. 



Fig. 18. 



m 



Intestinal Tract of Ardea candidissima. Lettering as before. 



