PLATE XXIII. 



ODOOTOKNITHES. 



Sternum and Coracoid of Ichthyornis dispak Marsh. 



All Figures twice Natural Size. Page. 



Fig. 1. — Sternum ; anterior view, showing overlapping grooves for the coracoids, and the promi- 

 nent keel, .. 147 



Fig. 2. — Sternum; lateral view, seen from the left; outline of crest restored from a second 



specimen, - 147 



Fig. 3. — Sternum ; superior view, - - 147 



Fig. 4. — Sternum ; inferior view, 147 



Fig. 5. — Left coracoid ; anterior surface ; upper end restored in outline from another specimen, . 144 

 5a — Sternal end. 



Fig. 6. — Left coracoid ; posterior surface, 144 



