3^0 



CHECK-LIST OF NORTH AMERICAN BIRDS. 



, 4. Graciilavus veloz Marsh. 



Graciilavus velox Marsh, Am. Journ. Sci. III. 1872, 363. 



Greensand of the middle marl bed, or Upper Cretaceous, near Hor- 

 nerstown, New Jersey. 



5. Graciilavus pumilus Marsh. 



Graadavus pumilus Marsh, Am. Journ. Sci. HI. 1872, 364. 



Greensand of the middle marl bed, or Upper Cretaceous, near Hor- 

 nerstovvn, New Jersey. 



6. Hesperornis regalis Marsh. 



Hesperornis fcgalis Marsh, Am. Journ. Sci. III. 1872, $6. 

 Pteranodon beds of Western Kansas. 



7. Hesperornis crassipes Marsh. 



Lestornis crassipes Marsh, Am. Journ. Sci. XI. 1876, 509. 

 Hesperornis crassipes Marsh, Odontornilhes, 1880, 196, figs. 40 a-d^ 

 pis. vii, xvii. 



Yellow chalk of the Pteranodon beds, Western Kansas. 



8. Hesperornis gracilis Marsh. 



Hesperornis gracilis Marsh, Am. Journ. Sci. XI. 1876, 510. 

 Yellow chalk of the Pteranodon beds, Western Kansas. 



9. Ichthyomis dispar Marsh. 



Ichthyornis dispar Marsh, Am. Journ. Sci. IV. 1872. 344. 

 Pteranodon beds, Middle Cretaceous, Northwestern Kansas. 



10. Ichthyomis agilis Marsh. 



Graculavus agilis Marsh, Am. Journ. Sci. V. 1873, 230. 

 Ichthyornis ngilis Marsh, Odontornithes, 1880, 197. 



Pteranodon beds, Miuale Cretaceous, Western Kansas. 



