252 



1108. The os scaphoides of the Anoplotherium commune: it articulates by two 



surfaces with the os cuboides, and presents anteriorly but one articular 

 surface for a cuneiform bone : on the inner side of the bone just behind 

 that surface there is a small facet indicating the existence of a second 

 rudimental cuneiform bone. 



1 1 09. The os cuneiforme of the Anoplotherium commune, corresponding with 



the internal of the three which are found in the pentadactyle foot. 



1110. The innermost of the two distinct metatarsal bones of the Anoplotherium 



commune : it corresponds with the third or middle metatarsal of the 

 pentadactyle foot. 



1111. The outermost of the two metatarsals of the Anoplotherium commune: it 



corresponds with the fourth metatarsal of the pentadactyle foot. 



1112. The proximal phalanx of the innermost toe of the Anoplotherium 



commune. 



1113. The middle phalanx of the same toe. 



1114. The distal phalanx of the same toe. 



1115. The proximal phalanx of the outermost toe of the Anoplotherium commune. 



1116. The middle phalanx of the same toe. 



1117. The distal phalanx of the same toe. 



The originals of the foregoing casts of the bones of the hind-foot 

 were discovered in the Eocene deposits of gypsum at Montmartre, and 

 are described by Cuvier in the ' Ossemens Fossiles,' ed. 1822, torn, iii., 

 who justly observes that the structure presented by this hind-foot is 

 absolutely unknown amongst existing animals. The Ruminants alone 

 have a didactyle hind-foot ; but these, even the Camels, which resemble 

 the Anoplotherium in the separation of the cuboid and scaphoid, have 

 the metatarsal bones confluent, and forming a single bone called the 

 " cannon-bone." 



