ANTHEACOTHEEIID^. 227 



shows pm. 4, part of m. 2, and m . 3 ; and agrees very closely 

 with the immature mandible figured by Filhol, op. cit. 

 pi. xxii. fig. 103, under the name of Ancodus leptorhyn- 

 clius. Hastings Collection. Purchased, 1855. 



29781. Part of the right ramus of the mandible, showing the last 

 two premolars and the three true molars ; from the 

 Hempstead beds of the Isle of Wight. 



Hastings Collection. Purchased, 1855. 



29802. The mandible of a young individual, showing the last three 

 milk -molars and the first true molar of both sides; from 

 the Hempstead beds of the Isle of Wight. This specimen 

 is considerably larger than the lower jaw of H. velaunus 

 of the same age (No. 29784) ; the united lengths of mm. 3 

 and mm. 4 being 0,042 as against 0,034. 



Hastings Collection. Purchased, 1855. 



M. 1945. Cast of the mandible of an immature female individual. 

 The original is from the Lower Miocene of Ronzon ; and 

 is figured (reversed) by Filhol, op. cit. pi. xxi., under the 

 name of Ancodus aymardi. Presented by Dr. Kowalevshy. 



M. 1943. Part of the left ramus of the mandible, containing the 

 last premolar and the three true molars ; from the Lower 

 Miocene of Honzon. The length of the space occupied by 

 the three true molars is 0,080, and the length of m . 3 0,041; 

 the corresponding dimensions of specimens described by 

 Filhol in the Ann. Sci. Geol. vol. xii. art. 3, pp. 156, 158, 

 being 0,048 and 0,039. Presented by Dr. Kowalevshy. 



29754. The third left lower true molar ; from the Hempstead beds 

 of the Isle of Wight. The length of this tooth is 0,044. 

 Hastings Collection. Purchased, 1855. 



29839. Part of the left ramus of the mandible, containing the seeond 

 true molar ; from the Hempstead beds of the Isle of 

 Wight. Hastings Collection. Purchased, 1855. 



29846. Part of the right ramus of the mandible, containing pm . 4 



and m. l ; from the Hempstead beds of the Isle of Wight. 



Hastings Collection. Purchased, 1855. 



29763. Fragment of the left ramus of the mandible, containing 

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

 Wight. The specific reference of this specimen is pro- 

 visional. Hastings Collection. Purchased, 1855. 



