188 UNGULA.TA. 



The canine is less developed in the present specimen, and 

 the third incisor less obliquely placed than in the latter. 

 In both the third lobe of m . 3 has two cusps. 



Hastings Collection. Purchased, 1855. 



29174. Fragment of the right ramus of a mandible, containing m . 3, 

 and the hinder part of m. 2, which may belong to the 

 present genus or species ; from the Headon beds ( Upper 

 Eocene) of Hordwell, Hampshire. The length of m. 3 is 

 0,021. Hastings Collection, Purchased, 1855. 



Genus ANOPLOTHERIUM, Cuvier \ 



Including JEurytherium, P. Gervais 2 . 



Diplobune, Riitimeyer 3 {in parte). 



Great confusion exists in regard to the larger species here in- 

 cluded in this genus, owing to the imperfect definition of one of 

 Cuvier's species, and the circumstance that Gervais' Euniiherium 

 latipes 4 was founded on bones of the feet. 



The specimens of the dentition and bones of the feet of the larger 

 forms in the Museum may be arranged in two series, as follows : — 





Dentition. 



A. Largest form. 



Paris, Vaucluse, and Quercy. 



B. Smaller form. 

 Paris and Vaucluse. 



C. Still smaller form. 



Paris, Yaucluse, and Quercy. 



Foot-bones. 

 A'. Largest tridactyle form. 



Paris, Yaucluse, and Quercy. 

 B'. Smaller tridactyle form. 



Paris and Yaucluse. 

 B' ' . Equal-sized didactyle form . 



Paris and Yaucluse. 

 C". Still smaller tridactyle form. 



Paris, Yaucluse, and Quercy. 



The specimens ranged under A comprehend the typical A. magnum, 

 and others from Yaucluse and Quercy which cannot be specifically 

 distinguished, although there is a slight variation in the size of 

 individual specimens from all three localities. The specimens in A' 

 correspond to Eurytlierium latipes, and as these are the largest 

 limb-bones, the a priori presumption is that they belong to the 

 same species as the largest teeth, viz. A. commune. This has been 

 practically recognized by Filhol % who provisionally refers the 



1 Ann. d. Museum, vol. iii. p. 370 (1804). 



2 Zool. et Pal. Franchises, 1st ed. vol. ii. Exp. no. 36, p. 3 (1848-52). 



3 Denkschr. schw. Ges. Nat. vol. xix. art. 3, p. 74 (1862). 



4 Vide Zool. et Pal. Francises, 2nd ed. pi. xxxvi. 



5 Ann. Sci. Geol. vol. viii. art. 1, p. 142 (1877). 



