196 



TTNGTTLATA. 



adult mandible No. 30622, and is smaller than the young 

 mandible of A. commune, No. 30793. 



Bravard Collection. Purchased, 1852. 



30797. Fragment of the left ramus of the mandible of a young 

 individual, containing mm. 3 and mm. 4, and agreeing in 

 size with the last specimen ; from the Upper Eocene of 

 Debruge. Bravard Collection. Purchased, 1852. 



M. 2144. Greater part of the right ramus of the mandible of a 

 young individual, showing the last three milk-molars ; 

 from the Upper Eocene of Debruge. This specimen re- 

 sembles the last two, the length of mm. 4 being 0,0215. 



Purchased, 1885. 



Foot-bones of the second largest tridactyle form. 



30600 a. The greater part of the skeleton of the right fore foot, 

 made up from the bones of different individuals ; from the 

 Upper Eocene of Debruge. The extreme length of the 

 fourth metacarpal is 0,102. 



Bravard Collection. Purchased, 1852. 



30600 b. The greater part of the skeleton of the left hind foot, made 

 up from the bones of different individuals ; from the Upper 

 Eocene of Debruge. It is apparently from a cast of this 

 specimen that the figure given on page 157 (fig. 209) of 

 Gaudry's ' Les Enchainements — Mammiferes Tertiaires ' 

 is taken, the astragalus being represented on a-larger scale 

 on page 149 (fig. 194) of the same work. The figures are 

 referred to Eurytherium latipes, but the astragalus is 

 smaller and relatively shorter than the type of that form 

 (supra, p. 193). The extreme length of the astragalus is 

 0,052, and its greatest width inferiorly 0,042 ; the corre- 

 sponding dimensions of the astragalus of the so-called 

 E. latipes being 0,071 and 0,053. The calcaneum differs 

 widely from No. M. 1465 (p. 193). 



Bravard Collection. Purchased, 1852. 



30600 C. A very similar left hind foot, without the astragalus ; from 

 the Upper Eocene of Debruge. 



Bravard Collection. Purchased, 1852. 



Boot-hones of the equal-sized didactyle form. 



11814. Cast of the bones of the right fore foot. The original is 

 from the Upper Eocene of Montmartre, and is figured in 



