EXTINCT MAMMALIA OF NORTH AMERICA. 411 



EDENTATA. 



GRA VIQRADA. 



MEGATHERIUM. 



Megatherium mirabile. 



Meg'ttherlum, Mitchell : An. Lye. Nat. Hist. 1824, I, .58, PL VI, Figs. 12, 13. Cooper : lb. 114, 

 PI. VIII ; 1828, II, 267 ; Etlinb. New Phil. .Tour. 1828, V, 327. Cuvier: Ossein. Fos. 1836, 

 VIIL 338. Anon.: Am. Jour. So. 1839, XXXV, 380. Couper: Proc. Ac. Nat. Sc. 1842, 

 189, 216 ; Pr. Geol. Soc. Lend. 1843, IV, 33. Harlan : Am. Jour. Sc. 1842, XLIII, 143 ; 

 1843, XLIV, 70. Lyell : Proc. Geol. Soc. Lond. 1843, IV, 36 ; Am. Jour. Sr. 1844, XLVI, 

 323. Tuoraey : Rep. Geol. S. Carolina 1848, 203. Holmes : Am. Jour. Sc. 1849, VII, 197 ; 

 Pr. Am. As. Adv. Sc. 1850, II, 203. 



Megatherium Cuvieri, Harlan ; Fauna Amer. 1825,201 ; Edinb. New Phil. Jour. 1834, XVII, 355 ; 

 Trans. Geol. Soc. Penn. 1835, 63 ; Med. Phys. Res. 1835, 269, in part. Meyer: Palteologica, 

 1832, 62, in part. Hodgson : Mem. ou the Megatherium, 1846. DeKay : Nat. Hist. New 

 York, Zool. 1842, I, 98. 



Megatherium mirabile, heidy : Proc. Ac. Nat. Sc. 1852,117; Anc. Fauna Neb. 1853, 10 ; Mem. 

 Ext. Sloth Tribe, 1855, 49, 59, PI. XV ; Holmes' Post-pliocene Fos. S. Carol. 1860, 111, PI. 

 XX, Fig. 8. Bronn : Leth. Geog. 1853-6, III, 1003. 



Remains of the North American Megatherium, all referable to this species, have 

 thus far been discovered only in the States of Georgia and South Carolina. Quater- 

 nary. 



Of uncertain reference. 



Megatherium, Harlan ; Am. Jour. Sc. 1828, XIV, 187. 



Remains found in New Jersey, nine miles south-east of Philadelphia. No further 

 notice was given of the discovery. Probably only Mastodon. 



MEGALONYX. 



Megalonyx JefFersoni. 



Megalonyz, Jefferson : Trans. Am. Philos. Soc. 1799, IV, 246. Cuvier: Ossem. Fos. 3d Ed. 1825, 



V, Pt. I, 160, PI. XV, except Fig. 13; 4th Ed. 1836, VIII, 304, PI. CCXVI, except Fig. 13. 

 Cooper, etc.: Am. Jour. Sc. 1831, XX, 370 ; Month. Am. Jour. Geol. 1831, 171. Cooper: 

 An. Lye. Nat. Hist. N. York, 1833, III, 166. Lyell : Proc. Geol. Soc. Loud. 1843, IV, 36 ; 

 Am. Jour. Sc. 1844, XLVI, 323. Wyman : Hall and Whitney's Rep. Geol. Surv. Wiscon- 

 sin and Whitney's do. Up. Missis. Lead Region, 1862, 422. Megalonix, Wistar : Trans. Am. 

 Phil. Soc. 1799, IV, 526, Pis. I, II. Barton : Med. Phys. Jour. 1804, I, 153 ; TiUoch's Phil. 

 Mag. 1805, 99. Cuvier : An. du Mus. 1804, V, 358, PI. XXIII, except Fig. 13 ; Ossem. Fos. 

 1812, IV, Megal. 1-18, PI. 



Megatherium Jeffersonii, Desmarest : Mammalogie, 1820, 366. 



Megatherium boreale, Oken : Kriig. Urwelt. Naturg. 1825, II, 29, on authority of Bronn's Leth. 

 Geog. 1856, III, 1009. 



Megalonyx Jeffersonii, Harlan : Fauna Amer. 1825, 201 ; Edinb. New Phil. Jour. 1834, XVII, 355 ; 

 Trans. Geol. Soc. Penn. 1835, I, 65 ; Med. Phys. Res. 1835, 347. Cooper : Month. Am. Jour. 



