FOSSILS FIU)M THK KNVIRONS OF TOKYO. /Ô 



University of Tokyo. SubsequfiUly some fragments of skeletons 

 were also collected by Prof. Yokoyama and myself. 



The molar teeth are both broken at the anterior end. Tiie 

 crown of the larger specimen (PI. VI. Figs. 2 and 3) exhibits 

 the discs of seven worn ridges, the anterior most being half 

 bi'oken. The anterior five ridges are worn down into transverse 

 discs, but the penultimate one is more slightly worn into two 

 irregular shaped bands, while the most posterior one shows only 

 the summits of five small digitations. The anterior four discs 

 aie worn off short, but the others are less so, the degree of 

 wearing gradually diminishing as we go backwards. Each disc 

 is rounded at its lateral terminations, and has a crescentic 

 shape, the anterior enamel boundary being somewhat concave 

 and the posterior convex. The horns of the crescent are bent 

 abruptly forwards. There is a rhomboidal expansion in the 

 middle of the third and fourth discs, which is 1.15'"'", measured 

 between the outer surfaces of the enamel. The enamel plates 

 are thick and their outer edges present an appearance of con- 

 siderable crimpling, caused by the deep vertical grooving of the 

 outer surface. The grinding surface is concave from back to 

 front. The extreme length of the crown surface is 9.2'^"', and 

 the width at the first ridge 4"", at the fourth 5.3'™, and at 

 the last ridge 3.6"'". The greatest height of the tooth is 10.2""'. 

 It is evident that, the tooth, when entire, was composed of 

 about nine ridges, and that it was about 12""^ long. The inner 

 side of the tooth is convex as seen in the other specimens of 

 Elephas, and the outer edge concave in the upper view of 

 the crown. 



The other specimen (PI. YI. Figs. 3 and 4.) has a large 

 part of its anterior half broken off. We find in it only three 



