COPE.] PALEONTOLOGY APPENDIX. 533 



APPEND! X. 



The essays and papers in which the descriptions and determinations 

 of most of the species of extinct Vertebrata included in the preceding 

 report originally appeared are the following : 



Cope, Paleontological Bulletin, No. 14; published July 25, 1873. 



Cope, Paleontological Bulletin, No. 15; published August 20, 1873, 



Cope, Paleontological Bulletin, No. 16 ; published August 20, 1873. 



Cope, Paleontological Bulletin, No. 17 ; published October 25, 1873. 



Cope, Synopsis of New Vertebrata from the Tertiary of Colorado ; pub- 

 lished October 16, 1873. 



Hayden, Bulletin of the United States Geological Survey of the Terri- 

 tories, No. 1 ; published January 21, 1874. 



Hayden, Bulletin of. the United States Geological Survey of the Terri- 

 tories, No. 2 J published April 19, 1874. 



