AVilliston.] Birds. 45 



box containing the bird specimen after he had made it ready to 

 send to Professor Cope, and sent it instead to Professor Marsh. 

 Had Professor Cope received the box, he would have been the 

 first to make known to the world the discovery of " Birds with 

 Teeth." (See Addenda to Part I.) 



During the succeeding years, the large collections of birds 

 from this state were made for Professor Marsh by Mudge, Brous, 

 Cooper, Guild, F. H. Williston, and the writer. Other bird re- 

 mains have been obtained by Sternberg and Martin. In the 

 University of Kansas museum there are portions of some twelve 

 or more birds, including one specimen of a Hesperornis, much 

 the most complete and perfect of any hitherto discovered. They 

 apparently do not represent any new species or new forms, 

 though not all agreeing with those described by Marsh. 



In the present paper it is not worth while entering into any 

 detailed description of these forms, inasmuch as the very com- 

 plete and richly illustrated monograph of Professor Marsh 26 must 

 remain indispensable to all those who wish to obtain more com- 

 plete information. 



The following list includes all the known species of birds from 

 the Kansas Cretaceous, based upon fossil remains : 



RATIT^E — Oclontolcse. , 

 Hesperornis. 



Marsh, Amer. Journ. Sci., in, 56, Jan., 1872. 

 If. regalis Marsh, Amer. Journ. Sci., in, 56, 1872. 



This species is the best known and the most common of 

 all the species from the Kansas Cretaceous. Practically 

 the complete skeleton is known. See pi. vi. 



H. crassipes Marsh, Amer. Journ. Sci,, xi, 509, June, 1876 (Lestornis). 



This species was discovered by Mr. G. P. Cooper, and col- 

 lected by the present writer from the yellow chalk of 

 Plum creek, in Gove county, Kansas. It is peculiarly 

 characterized by the presence of a rugosity on the pos- 

 terior outer side of the tarso-metatarsal, above its mid- 

 26. Odontornithes ; a Monograph of the Extinct Toothed Birds of North America. By Oth- 

 niel Charles Marsh. New Haven and Washington, 1&S0. 



