Falcootle.] OSTEOLOGIA AVIUM. [Aquiline. 



Haliaetus, iSav. 



Macei, Temm. 



Similar to Haliaetus leucocephalus, but with a foramen on each side of the posterior 

 margin of the sternum. In the British Museum. 



Haliastuk, Selby. 



Indus, Bodd. 



Similar to the other Sea Eagles, except in measurements, and in having two foramina 

 on the posterior margin of the sternum. In the British Museum. 



Measurements. 



Tenths. 



Length of humerus 42 



Length of ulna 49 



Length of radius 48 



Length of metacarpus 22 



Length of femur 25 



Length of tibia 32 



Length of metatarsus 20 



Length of sternum 22 



Tenths. 



Breadth of posterior margin of sternum 14 

 Breadth of anterior margin of sternum 13 

 Depth of keel ........ 6 



Length of head 28 



Breadth of head ....... 15 



Length of pelvis 25 



Breadth of pelvis 12 



Illustration. 

 Sternum, Plate III. fig. 13. 



Cuncuma, G. B. Gray. 



Leucogaster, Gm. 



Similar to Haliaetus, but without any foramina on the posterior margin of the 

 sternum. In the British Museum. 



Measurements. 



Tenths. 



Length of humerus 73 



Length of ulna 89 



Length of metacarpus 40 



Length of femur 42 



Length of tibia ....... 59 



Length of metatarsus 38 



Length of sternum ...... 51 



Tenths. 

 Breadth of posterior margin of sternum 23 

 Breadth of anterior margin of sternum 22£ 

 Depth of keel . . . . . . . 11 



Length of head 44 



Breadth of head 21 



Length of pelvis 47 



Breadth of pelvis 22\ 



ICHTHYAETUS, Lafres. 



Bicolor, G. B. Gray. 

 Similar to the other Fishing Eagles, but with the sternum very long and narrow ; 



15 



