6 UNGUIATA. 



41929. The third right upper true molar. Described and figured 

 {Fig.) by Owen, op. cit. p. 427, pi. xxviii. fig. 9. 



41930. The third (?) left upper premolar. Described and figured 

 (Fig.) by Owen, op. cit. pp. 426-427, pi. xxviii. fig. 8. 



41931. The first right lower true molar. Described and figured by 

 (Fig.) Owen, op. cit. p. 428, pi. xxix. fig. 5. 



41932. The second left lower true molar. Figured by Owen, 

 ?ig.) op. cit. pi. xxix. fig. 4. 



41933. The third left lower premolar. Described and figured by 

 (Fig.) Owen, op. cit. p. 427, pi. xxix. fig. 6. 



41940. Fragments of molars. 



Family LOPHIODONTIDiE. 



The upper true molars are more complex than the premolars ; the 

 lower molars are bilophodont or subcrescentoid ; m . 3 generally has 

 a third lobe, but it is absent in Hyrachyus. There are usually four 

 digits in the manus and three in the pes ; but in Triplopus (which 

 Cope refers to a distinct family) there are but three in the manus. 



Genus LOPHIODON, Cuvier 1 . 



Dentition : — I. |, C. y, Pm. |, M. |. In all specimens that the 

 writer has seen the first premolar is absent ; the lower molars are 

 simply bilophodont. 



Lophiodon tapiroides, Cuvier 2 . 



Syn. Palceotherium tapir oides, Cuvier 3 . 



This is the second largest species of the genus. 

 Hah. Europe. 



11820. Cast of a fragment of the right maxilla, showing m. 2 and 

 m- 3 . The original is from the Middle (?) Eocene of 

 Bftchsweiler (Bas-Rhine), Alsace, and is described and 

 figured by Cuvier in the ' Ossemens Fossiles,' 2nd edit, 

 vol. ii. pt. i. p. 206, pi. vii. fig. 3. 



Mantell Collection. Purchased, 1836. 



1 Ossemens Fossiles, 2nd edit. vol. ii. pt. i. p. 176 (1822). 



2 Ann. d. Museum, vol. vi. p. 56 (1805). PalceotJierium ; but subsequently 

 transferred to Lophiodon. 



3 Loc. cit. 



