ANTHRACOTHEKIIDJE. 



Fig. 31. 



Hyopotamus porcinv*. First and second left upper true molars ; from the 

 Hempstead beds of the Isle of Wight. }. 



and those of m. 2 0,0185 x 0,020. These dimensions are 

 slightly larger than those of the two teeth figured by 

 Gervais and regarded as m. 1 and m. 2 ; hut it is quite 

 probable that they are really mm. 4 and m. 1. The present 

 teeth are readily distinguished from those of H. bovinus by 

 their inferior size, and their lower cusps, shallower hollows, 

 and the slighter concavity of the outer surface of the outer 

 columns. They are really intermediate between the molars 

 of H. bovinus and A. alsatlcum (No. M. 1389); but are, 

 on the whole, nearest to the former. 



Hastings Collection. Purchased, 1855. 



29793. The second right upper true molar ; from the Hempstead 

 beds of the Isle of Wight. 



Hastings Collection. Purchased, 1855. 



29897. The third right upper true molar ; from the Hempstead beds 



of the Isle of Wight. The dimensions are 0,020 x 0,024. 



Hastings Collection. Purchased, 1855. 



29773. Fragment of the left maxilla, containing mm. 4, m. 1, and 

 m. 2, in an unworn but somewhat broken condition ; from 

 the Hempstead beds of the Isle of Wight. The dimensions 

 of mm. 4 are 0,0118 x 0,012. 



Hastings Collection. Purchased, 1855. 



40209. Fragment of the left ramus of the mandible, containing 

 m. 1 and m. 2 ; from the Hempstead beds of the Isle of 

 Wight. This specimen (woodcut, fig. 32) is referred to 

 the present species on account of the agreement in the 

 size and structure of the teeth. The teeth are readily 



