CAUDAL VERTEBRAE OF ICHTIIYORXIS. 



169 



Measurements of Posterior Caudal. (Tchthyornis victor, No. 1732.) 



Length of centrum, 3.2 m 



Transverse diameter of anterior articulation, 3. 



Vertical diameter of anterior articulation, 2.4 



Transverse diameter of posterior articulation, 3.2 



Vertical diameter of posterior articulation, 2.8 



Measurements of Posterior Caudal. (Ichthyornis victor, No. 1732.) 



Length of centrum,... 3.4™ 



Transverse diameter of anterior articulation, 3. 



Vertical diameter of anterior articulation, 2.6 



Transverse diameter of posterior articulation, 3. 



Vertical diameter of posterior articulation, 2.6 



Diameter of vertebra, across transverse processes, .- 8.2 



Measurements of First Vertebra of Pygostyle. (Ichthyornis victor, No. 1732.) 



Transverse diameter of anterior articulation, 2.5 n 



Vertical diameter of anterior articulation, 2.5 



Vertical diameter of neural canal, --- 1.5 



