On Certain Genera and Species of North 

 American Cretaceotts Actinopterous Fishes, 



By O. P. Hay. 



AUTHOR'S EDITION, extracted from BULLETIN 



OF THE 



limcvicaw g^xtscum of glatxtval gistorij^ 



Vol. XIX, Article i, pp. 1-95. 

 Plates I-V, and 72 Text Figures. 



New York, March 7, igoj. 



