Falconid^e.] 



OSTEOLOGIA AVIUM. 



Measurements (continued). 



Tenths. 



[BUTEONIN.E. 



Length of femur 



Length of tibia 



Length of metatarsus 



Length of sternum 35 



Breadth of posterior margin of sternum 2 

 Breadth of anterior margin of sternum 18 



Tenths. 



Depth of keel 7 



Length of head 



Breadth of head 



Length of pelvis 35 



Breadth of pelvis 17 



Archibuteo, Brehn. 



Lagopus, Brunn. 

 I have only the sternum, coracoids, scapula, and furculum of this bird, which do not 

 differ in shape from those of A. aquilinus in the British Museum, but slightly in their 

 proportions, the sternum being shorter in proportion to its breadth, and the keel deeper. 



Measurements. 

 Tenths. 



Length of humerus 



Length of ulna 



Length of radius 



Length of metacarpus 



Length of femur 



Length of tibia 



Length of metatarsus 



Length of sternum 32 



Tenths. 



Breadth of posterior margin of sternum 20 

 Breadth of anterior margin of sternum 16 



Depth of keel 8 



Length of head 



Breadth of head 



Length of pelvis 



Breadth of pelvis 



Polioenis, Kawp. 



Teesa, Frankl. 

 The body only of this bird is in the British Museum, sent there by Mr. Hodgson ; the 

 sternum has two foramina on its hinder margin, and all the bones are very similar to Buteo. 



Measurements. 



Tenths. 



Length of humerus 



Length of ulna 



Length of radius 



Length of metacarpus 



Length of femur 



Length of tibia 



Length of metatarsus 



Length of sternum 20 



10 



Tenths. 



Breadth of posterior margin of sternum 14 



Breadth of anterior margin of sternum 11 



Depth of keel 5 



Length of head 



Breadth of head . 



Length of pelvis 14 



Breadth of pelvis 11 



