"f.3 



INTESTINAL TRACT OF BIEDS. 

 Fig. 7. 



187 



Intestinal Tract of Spheniseus demersus. 

 k, supra-csecal kink ; other lettering as before. 



Fig. 8. 



m 



Intestinal Tract of Apienodytes Pennanti. Lettering as before. 



