336 CHECK-LIST OF NORTH AMERICAN BIRDS. 
6. Coniornis altus Marsu. 
Coniornis altus Marsu, Am. Journ. Sci. XLV. 1893, 82. 
Cretaceous of Montana, near mouth of Judith River. 
7. Graculavus velox Marsu. 
Graculavus velox Marsu, Am. Journ. Sci. III. 1872, 363. 
Greensand of the middle marl bed, or Upper Cretaceous, near 
Hornerstown, New Jersey. 
8. Graculavus pumilus Mars. 
Graculavus pumilus Marsu, Am. Journ, Sci. III. 1872, 364. 
Greensand of the middle marl bed, or Upper Cretaceous, near 
Hornerstown, New Jersey. 
9. Hesperornis regalis Marsu. 
Hesperornis regalis Marsu, Am. Journ. Sci. III. 1872, 56. 
Pteranodon beds of western Kansas. 
10. Hesperornis crassipes Marsu. 
Lestornis crassipes Marsu, Am. Journ. Sci. XI. 1876, 509. 
Hesperornis crassipes Marsu, Odontornithes, 1880, 196, figs. 
40 a—d, pls. vil, xvii. 
Yellow chalk of the Pteranodon beds, western Kansas. 
11. Hesperornis gracilis Marsu. 
Hesperornis gracilis Marsu, Am. Journ. Sci. XI. 1876, 510. 
Yellow chalk of the Pteranodon beds, western Kansas. 
12. Ichthyornis dispar Marsu. 
Ichthyornis dispar Marsu, Am. Journ. Sci. IV. 1872, 344. 
Pteranodon beds, Middle Cretaceous, northwestern Kansas. 
