214 



BIRD OAUiEJlY. 



PiATE XXIV. Kg. V. 



Left side view of the Skeleton of a Bird. Iceland Falcon (Hierofako islandns). 



1. Cranium. 



2. Quadrate. 



3. Mandible. 



4. Orbit. 



5. Cervical vertebrae. 



6. Thoracic vertebrae. 



7. Synsacral vertebrae 

 [hidden in a side view of 



the skeleton by the 

 iliac bones]. ' 



8. Caudal vertebrae. 



9. Thoracic rib. 

 10. Sternal rib. 

 n. Uncinate process. 

 12. Sternum. 



13. Keel of sternum. 



14. Ooracoid. 



15. Scapula. 



16. Furcula. 



17. Humerus. 



18. Ulna. 



19. Radius. 



20. Radial Carpal. 



21. Ulnar Carpal. 



22. Oarpo-metacarpus. 



23. PoUex. 



24. 1st Phalanx of 2nd 

 digit. 



25. 1st Phalanx of 3rd 



digit. 



26. Pubis. 



27. Ilium. 



28. Ischium. 



29. Femur. 



30. Tibia. 



31. Fibula. 



32. Tarso-raetatarsus. 



33. Metatarsal of digit 1 



(HaUux). 



34. Hallux or hind toe. 



35. Inner or 2nd tne. 



36. Middle or 3rd toe. 



37. Outer or 4th toe. 



P1.ATB XXIV. Fig. VI. 



Under surface of the Skull of a Bird showing the bones of the palate (2), and the 

 single occipital condyle (1) for the articulation of the skull with the neck. 



PlatbXXIV. Fig. VP. 

 Sclerotic Ring of bony plates. 



Plate XXIV. Fig. VII. 

 Portions of three Ribs to show the position of the uncinate processes (1). 



