6o 



Measurements of Itkygrammodon cameloides with Protolabis. 



Length of alveolar border of premaxillaries -035 



Greatest height of premaxillaries -017 



Greatest width of premaxillaries at last incisor. .. -013 



Thickness of premaxillary process -oio 



Length of diastema between first and second in- 

 cisors *OO35 



Length of diastema between second and third 



incisors -003 



Length of diastema between third incisors and 



canine -004 



Teeth. 



Fore-and-aft diameter of first incisor .007 



Fore and-aft diameter of second incisor '0075 



Fore-and-aft diameter of third incisor .008 



Fore-and-aft diameter of canine . OI2 



Fore-and-aft diameter of first premolar . OII 



Transverse diameter of first incisor .007 



Transverse diameter of second incisor -0073 



Transverse diameter of third incisor -0085 



Transverse diameter of canine -0113 



Transverse diameter of first premolar . OO5 



Ithygrammodon c. 



Protolabis. 



049 

 022 

 0115 

 017 



on 

 012 

 on 



009 

 .007 



