SKELETON OF THE CROCODILE. THE SKULL. 245 



1. THE CRANIUM PROPER OR BRAIN CASE. 



The cartilage and membrane bones of the cranium proper 



A B 



FIG. 



1. 

 2. 



3. 

 4. 

 5. 



6. 

 7. 

 8. 

 9. 

 10. 



11. 



43. PALATAL ASPECT A, OF THE CRANIUM, B, or THE MANDIBLE OF 

 AN ALLIGATOR (Caiman latirostris). x -|. (Brit. Mus.) 



premaxilla. 12. 



maxilla. 13. 



palatine. 14. 



pterygoid. 15. 



posterior nares. 16. 



transpalatine. 17. 



posterior palatine vacuity. 18. 



anterior palatine vacuity. 19. 



basi-occipital. 20. 

 opening of median Eusta- 21. 



chian canal, 

 jugal. 



quadratojugal. 

 quadrate, 

 dentary. 

 splenial. 

 coronoid. 

 supra-angular, 

 angular, 

 articular. 



lateral temporal fossa. 

 openings of vascular canals 

 leading into alveolar sinus. 



