OSTEOLOGIA AVIUM. 



ill 



The numbers in Plate II, figs. 1, 2, 3, and in Plate III. figs. 1, 2, designate the same 

 bone in each. In Plate I., which is that of an old Osprey, Haliaetus leucocephalus, in 

 consequence of anchylosis having taken place, the separate bones cannot be distinguished 

 so distinctly as in the other Plates ; the numbers, therefore, are only placed upon those 

 bones which are pretty well defined and which are useful in description, with the 

 exception of the palatine and other bones forming the roof of the mouth, which are not 

 visible. 



Plate IV. represents the head of the Emeu, the Peregrine Falcon, and a Podargus, 

 showing variations in the disposition of the cranial bones and the development of the 

 interarticular bones. 



• Bones of the Head. 



Plate II. figs. 1, 2, 3. Plate III. figs. 1, 2. 



1. Frontal bones. 



15. Sphenoid bone. 



2. Parietal bones. 



16. Eustachian tubes. 



3. Nasal bones. 



17. Vomer. 



4. Temporal bones. 



18. Omoid bones on pterygoid portion of the 



5. Os quadratum. 



sphenoid bone. 



6. Intermaxillary bones. 



19. Fig. 3. Plate I. Palatine bones. 



7. Ethmoid bone. 



20. Superior maxillary bones. 



8. Fig. 1. Plate P. Palatine bones. 



21. Opercular portion of the inferior maxillary 



9. Malar or zygomatic bones. 



bone. 



10. Foramen magnum. 



22. Condyloid portion of the inferior maxillary 



11. Atlar tubercle. 



bone. 



12. Supraoccipital "] 



13 Basilar I portions of the occipital 



23. Rami of the maxillary bone. 



14. Condyloid j b ° ne - 





Bones of the Trunk and Extremities. 



Plate I. 



1. Humerus, 



2. Ulna. 



3. Radius. 



4. Carpus. 



5. Metacarpus. 



6. 1st phalanx. 



7. 2nd, or terminal phalanx, 



8. Thumb. 



9. Coracoid bones. 



10. The two rami of the furculum. 



11. Scapula. 



12. Glenoid cavity. 



13. Femur. 



14. Tibiae 



15. Fibuke. 



16. Metatarsus. 



12 



