2 RANA 



3. View of mouth widely opened : maxillary teeth ; vomerine teeth ; posterior nares ; eyeballs ; Eustachian 

 tubes ; tongue ; glottis. 



-*?> Wh^-t UJL 



6 



4. Ventral view of the same frog firmly pinned by its legs ; the integument has been reflected from the body 

 and throat ; anterior abdominal vein seen through the muscular wall ; musculo-cutaneous veins ; xiphoid 

 cartilage ; hypoglossal nerve ; mylohvoid muscle. 



ft/01 



VT 



