198 TTNGULATA. 



from the Upper Eocene of Montmartre. The astragalus 

 agrees very closely with that of the didactyle form. 



Presented by Baron Cuvier. 



46729. A left calcaneum ; from the Upper Eocene of Montmartre. 



Purchased, 1874. 



30751-54. Eive specimens of the cuboid ; from the Upper Eocene 

 of Debruge. Bravard Collection. Purchased, 1852. 



30726, 30730. Two specimens of the cuboid ; from the Upper 

 Eocene of Debruge. 



Bravard Collection. Purchased, 1852. 



26772, 30758-60. Four specimens of the navicular; from the 

 Upper Eocene of Debruge. 



Bravard Collection. Purchased, 1852. 



Anoplotherium cayhixense, Lydekker, n. sp. 

 Syu. Eurytherium secundarium, Filhol 1 . 



This species is polydactyle, and of somewhat smaller size than the 

 Last, from which it is readily distinguished by the brachydont struc- 

 ture of the upper molars, and the approximation and distinctness of 

 the inner terminations of the anterior crescents of the lower true 

 molars. There is a certain amount of variation in the upper true 

 molars ; the outer surfaces of the external cusps in one variety 

 being more inwardly inclined than in another, which is thus less 

 widely removed from A. secundarium. The teeth of the most 

 brachydont variety present a striking resemblance to those of Hyo- 

 potamus, especially the brachydont H. porcinus. 

 Hab. Erance. 



30708. Fragment of the right maxilla of the less brachydont 

 variety, containing the last four cheek-teeth in an almost 

 unworn condition ; from the Upper Eocene of Debruge, 

 near Apt (Yaucluse), France. The length of the space 

 occupied by the tbree true molars is 0,051. 



Bravard Collection. Purchased, 1852. 



M, 2514. Cast of the greater part of the left maxilla of the same 

 variety, showing the canine (broken) and the seven 

 ^beek-teeth. The original is from the Upper Eocene of 



Ann. Sci. Geol. vol. viii. art. 1, p. 143 (1877). 



