ELEPHANTID^!. 71 



Mastodon cautleyi, Lydekker '. 



This provisional species connects the European M. longirostris 

 with the Asiatic M. latidens. The mandibular symphysis is not 

 known. The upper molars are relatively wide, with comparatively 

 high transverse ridges, obstructed valleys, and a somewhat fluted 

 enamel. The inner columns wear into very distinct trefoils, the 

 hind talons are very small, there is usually a cingulum on the inner 

 border, and the third molar 2 is comparatively short and has five 

 ridges and a narrow single hind talon. The lower molars cannot 

 in many cases be satisfactorily distinguished from those of M . lati- 

 dens. Premolars are probably present - , and there is no cement. 

 That the present form passes insensibly into M. latidens is quite 

 evident, and its right to specific distinction is perhaps doubtful ; as 

 far, however, as the "intermediate" molars are concerned, it might 

 equally well be included in M. longirostris, as these teeth are 

 practically indistinguishable. 



Hah. Western India (Perim Island). 



M. 2492. Fragment of the right maxilla of a young individual pro- 



{Fig.) bably belonging to this species containing mm. 2 and mm. 3 ; 



from the Pliocene Siwaliks of Perim Island, Gulf of Cambay. 



Figured by the present writer in the ' Palaeontologia 



Indica,' ser. 10, vol. iii. pi. xvii. fig. 1 (as ? M. perimensis). 



Presented by Diwan Wajeshankar Gowreeshankar, 1885. 



40778. An almost unworn third left upper milk-molar ; from Perim 



(Fig.). Island. Figured by the present writer, op. cit. pi. xvii. 



figs. 3, 3 a (as M. perimensis), and noticed on page xix of 



the same volume. Presented by C. Falconer, Esq., 1867. 



M. 3432. A very similar, but rather more worn third left upper 

 milk-molar ; from Perim Island. The resemblance of this 

 tooth to the two following specimens leaves little doubt as 

 to the specific reference ; the enamel is more rugose than 

 in the later teeth, but the characteristic inner cingulum is 

 present ; the corresponding tooth referred to M. latidens 

 (No. M. 3424, p. 74) is wider than No. 40778, but less 

 different from the present specimen. 



Presented by Col. J. W. Watson, 1886. 



M. 2884. The germ of the fourth right upper milk-molar; from 

 (Fig.) Perim Island. Figured by Falconer and Cautley in the 



1 Palaeontologia Indica (Mem. G-eol. Surv. Ind.), ser. 10, vol. iii. p. xiv(1886). 

 ? Only one specimen is known. 



Xu-/ 



Z.33 



