245 



has a .ilium, in a much-crushed condition ; from the Headon 

 beds (Upper Eocene) of Hordwell, Hampshire. This spe- 

 cimen has been described and figured by the present writer 

 in the ' Geological Magazine,' loc. cit. It shows the cheek- 

 dentition of both sides, although pm. 1 is wanting on the 

 right side. The dentition of the left side is represented in 

 the accompanying woodcut (fig. 35). The detached first 



Fig. 35. 



Anthracotherium gresslyi (Meyer). The left half of the palate and the upper 

 cheek-dentition ; from the Headon beds of Hordwell. \. 



premolar is inserted by two distinct fangs, and was pro- 

 bably approximated to the canine. The last six cheek- 

 teeth agree with those of typical species of the genus ; the 

 three true molars are in a well-worn condition. The an- 

 terior border of the posterior nares is situated a considerable 

 distance behind the last molar. The height from the lower 

 border of the foramen magnum to the summit of the 

 occiput is 0,034. The length from the lower border of the 

 foramen magnum to pm. 1 is 0,117 ; the length of the space 

 occupied by the last six cheek-teeth 0,047 ; that by the 

 three true molars 0,0265 ; the length of the diastema 

 between pm. 1 and pm. 2 0,0205 ; the length, of m. 3 

 0,0095, and its width 0,012. 



Hastings Collection. Purchased, 1855. 



29713. The mandible, probably belonging to the same individual as 



(Fig.) the last specimen ; from the Headon beds of Hordwell. 



This specimen, of which the right ramus and' the dentition 



are represented in the accompanying woodcut (fig. 36), is 



