INTRODUCTION. 



Cervus ? 



Elaphus americanus, De Kay: Nat. Hist. New York, 1842, Pt. I., Zool. Mam., 120.' 

 Bison latifrons, Leidy: Proc. Ac. Nat. Sc, 1852, VI. 117; Smiths. Contrib. to Knowl., 1852, V. 8. 



Bos latifrons, Harlan : Fauna Amer., 1825, 273. 

 Bison antiquus, Leidy. Proc. Ac. Nat. So., 1852, VI. 117; Smiths. Contrib. to Knowl., 1852, V. 11. 

 BooTHERiUM CAViFRONS, Leidy: Proc. Ac. Nat. Sc, 1852, VI. 71; Smiths. Contrib. to Knowl., 1852, 

 V. 12. 

 Bos Pallasii (in part), Dekay: An. Lyo. Nat. Hist, of N. York, 1828, II. 280. 

 BooiHERiuM BOMBiERONS, Leidy: Proc. Ac. Nat. Sc, 1852, VI. 71; Smiths. Contrib. to Knowl., 1852, 

 V. 17. 

 Bos hombifrons, Harlan: Faun. Amer. 1825, 271. 

 Ovis MAMMiLARis ? Hildreth : Am. Journ. Sc, 1837, XXXI. 82. 

 Harlanus AMERICANUS, Owen : Proc. Ac. Nat. Sc, 1846, III. 94; Journ. Ac. Nat. Sc, 1847, I. 18. 



Sus americana, Harlan: Amer. Journ. Sc, 1842, XLIII. 143. 

 Platygonus compressus, Le Conte: Am. Journ. Sc, 1848, V. 103 ; Trans. Am. Ac. Arts, 1848, III. 



257 ; Leidy : Trans. Am. Phil. Soc, 1852, X. 823. 

 DiCOTYLES DEPRESSiFRONS, Le Conte : Proc. Ac. Nat. Sc, 1852, VI. 3; Leidy: Trans. Am. Phil. Soc, 

 1852, X. 323. 



DiCOTYLES TORQUATUS (Jbssilis). 



Dicoti/Ies costaius, Le Conte: Proc. Ac. Nat. Sc, 1852, VI. 5. 

 Protochcerus prismaticus, Le Conte: Am. Journ. Sc, 1848, V. 105; Leidy: Trans. Am. Phil. Soc, 



1852, X. 323. 

 EuCHCERUs MACROPS, Leidy : Trans. Am. Phil. Soc, 1852, X. 823. 

 Equus americanus, Leidy : Proc. Ac. Nat. Sc, 1847, III. 262. 

 HiPPARiON VENUSTUM, Leidy : Proc. Ac. Nat. Sc, 1853, VI. 241. 



Tapirus AMERICANUS (fossilis). Carpenter: Am. Journ. Sc, 1842, XLII. 890; Ibid., 1846,1. 247; 

 Leidy: Proc Ac. Nat. Sc, 1849, IV. 180. 



Tapirus mastodontoides, Harlan : Fauna Amer., 1825, 224. 

 Tapirus Haysii, Leidy : Proc Ac. Nat. Sc, 1852, VI. 148. 

 Elephas AMERICANUS. {The fossil elephant of North America.') 



Elephas primigenius, Blumenbach. In part, of numerous authors. 

 Mastodon giganteus, Cuvier. See numerous authors. 

 Ursus AMERICANUS (fossilis). Leidy : Proc. Ac Nat. Sc, 1853, VI. 

 Ursus amplidbns, Leidy : Proc. Ac. Nat. Sc, 1853, VI. 

 Felis atrox, Leidy: Trans. Am. Phil. Soc.,. 1852, X. 819. 

 Procyon priscus, Le Conte : Am. Journ. Sc, 1848, V. 106. 

 Anomodon Snyderi, Le Conte : Am. Journ. Sc, 1848, V. 106. 

 Castor fiber (fossilis). Wyman : Am. Journ. Sc, 1850, X. 61. 

 Castoroides ohioensis, Foster: Second Ann. Eep. of the Geolog. Survey of Ohio, 1888, 80, 81; 



Wyman : Boston Journ. Nat. Hist. Soc, 1846, V. 385. 

 Oromys ^sopi, Leidy : Proc Ac. Nat. Sc, 1853, VI. 241. 

 Megatherium mirabile, Leidy: Proc. Ac. Nat. Sc, 1852, VI. 117. 



Megatherium, Cuvier. Cooper : An. Lye Nat. Hist, of N. York, 1824, 1. 114; Ibid., 1828, H. 267; 

 Hodgson : Mem. on the Megatherium, 1846. 



Megatherium Guvieri, Desmarest. Harlan : Fauna Amer., 1825, 200. 

 Megalonyx Jeffersonii, Harlan: Fauna Amer., 1825, 201. 



Megalonyx laqueatus, Harlan : Journ. Ac. Nat. Sc, 1888, VI. 269. 



Aulaxodon s. Pleurodon, Harlan : Med. and Phys. Researches, 1835, 380. 

 Megalonyx dissimilis, Leidy: Proc. Ac. Nat. Sc, 1852, VI. 117. 



' This may prove to be a new species, but it certainly is not the Cervus americanus of Harlan, as is 

 supposed by Dr. De Kay, for the remains of the latter indicate an animal even greater in size than the 

 Irish Elk. 



