ELEPHANTID^!. 171 



17133. Fragment of an incisor. 



M. 3014. Fragment of an incisor. Figured by Falconer and 

 {Fig.) Cautley, op. cit. pi. xli. fig. 5. 



36700. The proximal half of the right humerus. This specimen is 

 (Fig.) of enormous size, and is figured by Falconer and Cautley, 

 op. cit. pi. xlviii. figs. 1, 1 a, 1 b, as of the left side. 



Presented by the Secretary of State for India, 1860. 



M. 3106. The proximal part of the right radius. Figured by 

 (Fig.) Falconer and Cautley, op. cit. pi. lvi. figs. 3, 3 a. 



M. 3105. The distal portion of the right femur. Figured by Fal- 

 (Fig.) coner and Cautley, op. cit. pi. lvi. figs. 1, 1 a, 1 b, 1 c. 



HI. 3106 a. The distal portion of the right tibia. Figured by Fal- 

 (Fig.) coner and Cautley, op. cit. pi. lvi. figs. 2, 2 a. 



M. 3268. The left calcaneum. Figured by Falconer and Cautley, 

 (Fig.) op. cit. pi. lv. figs. 1, 1 a, 1 b, 1 c. 



M. 3108. A dorsal vertebra. Figured by Falconer and Cautley, 

 (Fig.) op. cit. pi. lvi. figs. 4, 4 a, 4 6. 



Elephas columbi, Falconer 1 . 

 Syn. Elephas texianus, Owen 2 . 

 ? Elephas jacksoni, Mather 3 . 

 ? Elephas americanus, De Kay 4 . 

 ? Elephas imperator, Leidy 5 . 

 Euelephas columbi, auct. 



The molars of this imperfectly known species were regarded by 

 Falconer as being intermediate between those of E. antiquus and 

 E. indicus ; there are, however, certain thin- ridged molars, said to 

 be from the same deposits, which are indistinguishable from those 

 of E. primigenius, and are accordingly included under that head. 

 The type molars are thick-ridged, and characterized by the antero- 

 posterior expansion of the basal extremities of the ridges ; the 



1 Quart. Journ. Geol. Soc. vol. xiii. table facing p. 319 (1857). 



2 Rep. Brit. Assoc, for 1858, Address, p. lxxxvi (1859). 



3 Amer. Journ. vol. xxxiv. p. 363 (1838). 



4 Nat Hist, of New York (Zool.), vol. i. p. 101 (1842). The identity of this 

 and the following three forms with E. columbi is given on the authority of 

 Leidy, although it does not appear certain whether one or more of them may 

 not really be equivalent to E. primigenius. The second name is preoccupied by 

 Cuvier's E. americanus— Mastodon americanus. 



5 Proc. Ac. Nat. Sci. Philad. for 1858, p. 10. 



