29 Dorsal aspect of the trunk skeleton of the Turkey vulture 

 (Carthartes a. septentrional is). The same speci- 

 men as is shown in figure 28 of plate 13. Slightly reduced (^ ap- 

 prox.) 



30 Dorsal aspect of the trunk skeleton of Neophron perc- 

 nopteru s . The same specimen as is shown in figure 27 of 

 plate 12. Reduced about one third (Ys approx.). The comparison 

 of these two trunk skeletons is very instructive, exhibiting, as they 

 do, the marked differences between this part of the skeleton in the 

 New and Old World vultures, especially in the pelves. 



164 



