INTRODUCTION. 9 
CERVUS 2 
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 AntTIQuus, Leidy: Proc. Ac. Nat. Se., 1852, VI. 117; Smiths. Contrib. to Knowl., 1852, V. 11. 
BooruEeRIuM CAviIFRONS, Leidy: Proe. Ac. Nat. Se., 1852, VI. 71; Smiths. Contrib. to Knowl., 1852, 
V. 12. 
Bos Pallasii (in part), Dekay: An. Lyc. Nat. Hist. of N. York, 1828, IT. 280. 
BoorHERIUM BOMBIFRONS, Leidy: Proc. Ac. Nat. Sc., 1852, VI. 71; Smiths. Contrib. to Knowl., 1852, 
Wordle 
Bos bombifrons, Harlan: Faun. Amer. 1825, 271. 
Ovis MAMMILARIS? Hildreth: Am. Journ. Se., 1837, XXXT. 82. 
HarLANUS AMERICANUS, Owen: Proc. Ac. Nat. Se., 1846, III. 94; Journ. Ac. Nat. Se., 1847, I. 18. 
Sus americana, Harlan: Amer. Journ. Se., 1842, XLIII. 143. 
PLATYGONUS compREssuUS, Le Conte: Am. Journ. Sc., 1848, V. 105; Trans. Am. Ac. Arts, 1848, III. 
257; Leidy: Trans. Am. Phil. Soc., 1852, X. 323. 
DICOTYLES DEPRESSIFRONS, Le Conte: Proc. Ac. Nat. Sce., 1852, VI. 3; Leidy: Trans. Am. Phil. Soc., 
1852, X. 323. 
DIcoryLES TORQUATUS (/fossilis). 
Dicotyles costatus, Le Conte: Proc. Ac. Nat. Sc., 1852, VI. 5. 
ProrocHa@rus PRISMATICUS, Le Conte: Am. Journ. Sc., 1848, V. 105; Leidy: Trans. Am. Phil. Soc., 
1852, X. 323. 
Eucna@rus MAcrops, Leidy: Trans. Am. Phil. Soc., 1852, X. 323. 
Equus AMERICANUS, Leidy: Proc. Ac. Nat. Sc., 1847, III. 262. 
HipparRion VENusTUM, Leidy: Proce. Ac. Nat. Sc., 1853, VI. 241. 
TAPIRUS AMERICANUS (/ossilis). Carpenter: Am. Journ. Sc., 1842, XLII. 390; Ibid., 1846, I. 247; 
Leidy: Proc. Ac. Nat. Sc., 1849, IV. 180. 
Tapirus mastodontoides, Harlan: Fauna Amer., 1825, 224. 
Tapirus Haystt, 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. Se., 1853, VI. 
Ursus AMPLIDENS, Leidy: Proc. Ac. Nat. Se., 1853, VI. 
Fettis atrox, Leidy: Trans. Am. Phil. Soc., 1852, X. 319. 
Procyon priscus, Le Conte: Am. Journ. Sc., 1848, V. 106. 
ANnoMopon Snypert, Le Conte: Am. Journ. Sc., 1848, V. 106. 
CASTOR FIBER (fossi/is). Wyman: Am. Journ. Se., 1850, X. 61. 
CASTOROIDES OHIOENSIS, Foster: Second Ann. Rep. of the Geolog. Survey of Ohio, 1838, 80, 81; 
Wyman: Boston Journ. Nat. Hist. Soc., 1846, V. 385. 
Oromys Alsopr, 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, I. 114; Ibid., 1828, IT. 267; 
Hodgson: Mem. on the Megatherium, 1846. 
Megatherium Cuvieri, Desmarest. Harlan: Fauna Amer., 1825, 200. 
MrcGatonyx JEFFERSON, Harlan: Fauna Amer., 1825, 201. 
Megalonyx laqueatus, Harlan: Journ. Ac. Nat. Se., 1838, VI. 269. 
Aulaxodon s. Pleurodon, Harlan: Med. and Phys. Researches, 1835, 330. 
MEGALONYX Dissimmis, 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 
Trish Elk. 
