PLATE X. 



ODONTOEOTTHES. 

 Pelvis of Hesperornis regalis Marsh. 



Natural Size. 1 



Fig. 1. — Lateral view, seen from the left ; showing the small foramen in the acetabulum, and 

 the free distal ends of the ilium, ischium and pubis 



Fig. 2. — Superior view of the same specimen, . - 



