74 ART. 1*. S. TOKUNAGA. 



discs and two posterior less digitated ridges. The two anterior 

 dife^es are very much abraded, the enamel edge of the succeeding 

 one strongly projecting ahove them. The penultimate ridge is 

 partly worn and forms separate, transverse or oval bands. The 

 last rido-e is almost whollv broken off. The width of the crown 

 at the first ridge is 5''", while its greatest height is 10'"". 



From the general form of the teeth, the shape and number 

 of the ridg( s, the mode of crimpling of the enamel plates, and 

 other chaiiicters, our specimens seem to belong to the third 

 premolar of E. anliquus Falc. or E. namadicus Falc. ;ind 

 Caut. Compared with the specimen found at Edobashi in 

 Tokyo our specimens are much smaller both in the height and 

 length of the crown, but among the specimens described as third 

 premolars of E. antiquus Falc. in " Palœoniological 3Iemoirs,'' 

 there is one having a crown 12.4'^'" or even lO.T'^^'" in length. 

 Therefore I am quite justified in referring our two specimens to 

 the third premolar, the larger being probably one belonging to 

 the right side of the upper jaw, and the smaller to the left 

 side of the same. 



Furthermore the anterior portion of a tusk (PL YI. Fig. 6.) 

 0Ï the same species was dug out from the same locality. It is 

 somewhat curved, with the cross section at the posterior extrem- 

 ity slightly elliptical where it has a diameter of about 9^"". 



Hitherto there has been great confusion in the distinction 

 of the two species, E. antiquus Falc. and E. namadicus Falc. 

 and Caut. This has been due to the fact that it is very 

 difficult to distinguish them merely by the form and structure 

 of the teeth. In our country, elephants belonging to the above 

 two species have been found at several place«. Naumann, in 

 his " Japaîiische Elephanlen der Vorzeit,'^ identified them with 



