396 EXTINCT MAMMALIA OF NORTH AMERICA. 



of fossils. They are those upon which the name of " Mastodonte" was first applied 

 by Cuvier. Systematically expressed the term of Mastodon has become so familiar 

 in ordinary language, that it would be useless to attempt to substitute the earlier, 

 but less agreeable names of Mamonteum, Mammut or Harpagmothermm. Of specific 

 names, systematically expressed, that of americanm is the earliest I have been able 

 to discover, and being peculiarly appropriate is the one I have adopted. 



Mastodon mirificns. 



See page 249, PI. XXV, Figs. 1,2. 

 Leidy : Proc. Ac. Nat So. 1858, 10. 

 Mastodon {Tetralophodon) mirificus, Leidy : Ibidem, 28. 



From the Loup Fork of the Platte River, and also reported to occur on the Nio- 

 brara River. Pliocene. 



Mastodon obscnrns. 



See page 244, PL XXVII, Figs. 13, 15, 16. 

 Mastodon angusiidens, Meyer : Palseolog. 1832, 71 in part. ? Croom : Am. Jour. Sc. 1835, XXVII, 



170. Warren: Proc. Am. Assoc. Adv. Sc. 1850, 93 ; Desc. Skel. Mast. 1852, PL XXVL 



Gibbes; Pr. Am. As. Adv. Sc. 1850, IIL 69. 

 Mastodon longirosiris, Harlan : Am. Jour. Sc. 1842, XLIII, 143. Charlesworth : Lyell, in Proc. 



Geol. Soc. Lond. 1843, IV, 38 ; Am. Jour. Sc. 1844, XLVI, 322. Charlesworth and Harlan : 



In Lyell, on the Miocene, &c.. Quart. Jour. Geol. Soc. Lond. 1845, I, 427. 

 Mastodon longirostris, s. angusiidens, Charlesworth : In Warren on the Mastodon, 1852, Append- 



175 ; 2d Ed. 1855, Ap. 203. 

 The Baltimore Tooth, Warren : Desc. Skel. Mastodon, 1852, 78 ; 2d Ed. 1855, 92. 

 Cast oj Mastodon Tooth, Leidy: Proc. Ac. Nat. Sc. 1858, 12 ; this work, 245, PL XXVII, Fig. 13. 

 Fragments of Mastodon Teeth from Tarhoro, N. C, Leidy : This work, p. 247, PL XXVII, Fig. 



16. 

 1 3Iastodon giganteus, Emmons: Rep. N. Carolina Geol. Surv. 1858, 198, Fig. 23. 

 Mastodon of the Miocene, Emmons : Man. Geol. 1860, 216, 218, 237, Figs. 186, 205. 

 Tetralophodon, Emmons : Man. Geol. 1860, 237, Fig. 205. 

 Mastodon ? Leidy : The present work, p. 245, PL XXVII, Figs. 13, 15, 16. 



Apparently a species distinct from the preceding, indicated by specimens from 

 North Carolina and Georgia. Other specimens, from unknown localities, supposed, 

 however, to be American, probably belong to the same. One of the latter was refer- 

 red to a species by Dr. Hays under the name of M. Chapmani,* but Dr. Hays ex- 

 presses the opinion to me that this is distinct from the former. Under the circum- 

 stances I propose to distinguish the species represented by the undoubted American 

 specimens by the name heading this article. The species has been suspected to be of 

 miocene age. I have included it in the catalogue of quaternary mammals on page 

 .357. 



* See page 248. 



