AXIAL SKELETON OF THE PELECANID^. ' 373 



p'. Parapophysial ridge. 



pc. Postaxial surface of centrum. 



pi. Pleurapophysial lamella. 



ps. Styliform process. 



j>z. Postzygapophysis. 



i. Surface for tubercle of rib. 



V. Lateral oanal. 



z. Zygapophysis of atlas. 



PLATE LV. 



Vertebras; of Pelecanus. 



Fig. 1. Atlas vertebra, seen preaxially. 

 Fig. 2. Atlas vertebra, seen laterally. 

 Fig. 3. Axis vertebra, seen laterally. 

 Fig. 4. Third vertebra, seen laterally. 

 Fig. 5. Fifth vertebra, seen ventrally. 

 Fig. 6. Sixth vertebra, seen laterally. 

 Fig. 7. Sixth vertebra, seen dorsally. 

 Fig. 8. Sixth vertebra, seen ventrally. 

 Fig. 9. Seventh vertebra, seen laterally. 

 Fig. 10. Seventh vertebra, seen dorsally. 

 Fig. 11. Seventh vertebra, seen ventrally. 

 Fig. 12. Seventh vertebra, seen preaxially. 

 Fig. 13. Eighth vertebra, seen laterally. 

 Fig. 14. Eighth vertebra, seen dorsaUy. 

 Fig. 15. Eighth vertebra, seen ventrally. 

 Fig. 16. Eighth vertebra, seen preaxiaUy. 

 Fig. 17. Eighth vertebra, seen postaxiaUy. 

 Fig. 18. Ninth vertebra, seen laterally. 

 Fig. 19. Ninth vertebra, seen dorsally. 

 Fig. 20. Ninth vertebra, seen ventrally. 

 Fig. 21. Ninth vertebra, seen preaxially. 

 Fig. 22. Thirteenth vertebra, seen dorsally. 

 Fig. 23. Thirteenth vertebra, seen ventrally. 

 Fig. 24. Thirteenth vertebra, seen preaxially. 

 Fig. 25. Fifteenth vertebra, seen laterally. 

 Fig. 26. Fifteenth vertebra, seen dorsally. 

 Fig. 27. Fifteenth vertebra, seen ventrally. 

 Fig. 28. Fifteenth vertebra, seen preaxially. 

 Fig. 29. Fifteenth vertebra, seen postaxially. 



3e 2 



