58 
Philippine Journal of Science 
Plate V 
Thrasaetos harpy ja, harpy eagle; right lateral view of the trunk skeleton, 
including bones of the shoulder girdle, reduced less than one- 
half. Length of sternum in the specimen equals 13 centimeters. 
No. 225806, United States National Museum collection; a 
specimen from Brazil. 
Plate VI 
Pithecophaga jefferyi; trunk skeleton, seen upon direct dorsal view, with 
the shoulder girdle in situ, reduced about one-third. The pygo- 
style and the six caudal vertebrae preceding it have been removed. 
Plate VII 
Fig. 1. Thrasaetos harpyja; anterior aspect of the right tibiotarsus and 
fibula, slightly reduced. From the same specimen as Plate V. 
2. Thrasaetos harpyja; anconal aspect of left humerus, slightly 
reduced. From the same specimen as Plate V. 
Plate VIII 
Fig. 1. Aquila chrysaetos, golden eagle; anconal aspect of right humerus. 
No. 18802, United States National Museum collection. Length 
of bone, about 18.2 centimeters. 
2. Thrasaetos harpyja; anconal aspect of right humerus. From the 
same specimen as Plate V. 
3. Pithecophaga jefferyi; anconal aspect of right humerus, reduced 
about one-third. Bone in life measures about 19.7 centimeters in 
length. 
Plate IX 
Fig. 1. Pithecophaga jefferyi; left femur, posterior aspect. Extreme 
length of bone in specimen, about 13 centimeters. Bone entirely 
pneumatic. 
2. Pithecophaga jefferyi; right tarsometatarsus and fibula, viewed 
on direct anterior aspect. Length of tarsometatarsus in speci- 
men, about 23 centimeters. 
3. Pithecophaga jefferyi; left tarsometatarsus and fibula, viewed on 
direct outer aspect. 
Plate X 
Pithecophaga jefferyi; skeleton of the right foot, mesial aspect, natural 
size. 
Plate XI 
Fig. 1. Haliseetus leucoceplialus ; skeleton of right foot, inner aspect, 
natural size. No. 19278, United States National Museum 
collection. 
2. Haliseetus leucocephalus ; skeleton of left foot, outer aspect, natural 
size. The same bird as in fig. 1. 
