OSTEOLOGY OF BIRDS 241 



Plate 5 



Specimens shown in figures 22 and 24 belong to the collections of 

 the United States National Museum, being number 13507 and 19290 

 respectively. Those shown in figures 23 and 25 are from the au- 

 thor's collection, now in the New York State Museum. All the 

 figures on this plate are reduced in exactly the same proportion. 

 The length of the lower border of the keel of the sternum, from 

 the " carinal angle " to the distal point of the xiphoid process, in 

 Crax g 1 o b i c e r a [fig. 22] measures in the actual specimen in 

 the museum collection exactly 10 centimeters in length, and this 

 may be taken as the scale of all the other figures in this plate, they 

 having all been reduced in the same proportion. 



