LITERATURE. 241 



40. "The Vertebrata of the Cretaceous Formations of the West." 



Cope. Ibid., vol. ii. 1875. 



41. " On Saurians recently discovered in the Dakota Beds of Colorado." 



Cope. ' American Naturalist.' 1878. 



42. " Homologies of some of the Cranial Bones of the Reptilia, and 



on the Systematic Arrangement of the Class." Cope. * Amer. 

 Assoc, for the Advancement of Science.' 1870. 



43. " On the Rank and Affinities of the Reptilian Class of the Mosa- 



sauridse." Owen. ' Quart. Journ. Geol. Soc," vol. xxxiii. 

 1877. 



VOL. II. 



