PLATE IX 



[All the Figures in this Plate are natural size] 



Fig. 68. The three trochlear of the tarso-metatarsus of Diairyma gigante, 

 arranged in si hi, or arranged in the corresponding position to those in the bone 

 shown in Figure 69, itp, inner trochlear process. (This is the Marsh specimen.) 

 (Plate II, Figure 16, and Plate V, Figure 30); mtp, middle trochlear process; otpa 

 outer trochlear process. The last two are the Cope types in the Collection of the 

 U. S. National Museum, atf, anterior tibial foramen. 



Fig. 69. Right tarso-metatarsus of a common dornestic fowl (cf. ad.), an- 

 terior aspect. Author's collection, alf, anterior tibial foramen. This bone 

 shows the relative size between Gallus domesticus and Diatryma gigantea, in so far 

 as the trochlese of the tarso-metatarsus is concerned. 



Fig. 70. Skeleton of the left foot of a tame turkey, showing relative size and 

 the presence of the anterior tibial foramen (atf.) on the opposite side, as compared 

 with the corresponding foramen shown in Figure 69. 



94 



