Aves — IcMTi yomis. 



91 



the Loons and Grebes of the present day, but was incapable Table-case, 

 of fliglit, and only the humerus, or upperbone of the wing, No. 13. 

 remains in a rudimentary condition. Its legs and feet were very 

 powerful and admirably adapted for swimming. The teeth of 

 Hesperomis were numerous and implanted in grooves, but the 









Fig. 1 14. — lie-stored skeleton of Ichthyornis victor (Marsh), from the Cretaceous beds of 

 Kansas, X. America (from specimens in the Yale College Museum). 



extremity of the bill seems to have been protected by a horny 

 sheath, as in recent birds. These bird- remains were discovered 

 in the Middle Cretaceous beds of Kansas, U.S., N". America, by 



