136 



LOPHIODON. 



L. bairdianus, Marsh. Am. Journ. of Sc., 3d Ser. vol. ii., p. 36. 



L. ajfinis, loc. cit., p. 37. 



L. nanus, loc. cit. 



L. pumilus, loc. cit., p. 38. 



LOPHIOTHERIUM. 



L. sylvaticum, Leidy. Pr. Ac. Nat. Sc., 1870, p. 126 ; Cont. to Ext. Vert., Farm, 

 p. 69. 



L. Ballardi, Marsh. Am. Journ. of Sc., 3d Ser. vol. ii., p. 39. 



OROTHERIUM, Marsh. Am. Journ. of Sc., 3d Ser. vol. iv., p. 217. 

 O. uintamim, Marsh, loc. cit. 



HELOHYUS, Marsh. Am. Journ. of Sc., 3d Ser. vol. iv., p. 207. 

 H,plicodon> Marsh, loc. cit. 



THINOTHERIUM, Marsh. Am. Journ. of Sc., 3d Ser. vol. iv., p. 208. 

 T. validum, Marsh, loc. cit. 



ARTIODACTYLA. 



All the forms described under this head are of uncertain reference. 

 ELOTHERIUM. 



E. lentum, Marsh. Am. Journ. of Sc., 3d Ser. vol. ii., p. 39, 



PLATYGONUS. 



P. Ziegleri, Marsh, loc. cit., p. 40. 

 PARAHYUS, Marsh. Am. Journ. of Sc., 3d Ser. vol. xii., 402. 



P. vagus. Marsh, loc. cit. 



HOMACODON, Marsh. Am. Jour, of Sc., 3d Ser. vol. iv., p. 126. 

 H. vagans, Marsh, loc. cit. 



ITHYGRAMMODON, gen. nov. This report, p. 56. 

 /. cameloides, sp. nov. This report, p. 57. 



AMBLYPODA. 



Cope. Wheeler's Survey, vol., iv., pt. ii., p. 179. 



DINOCERATA. 



Marsh. Am. Jour, of Sc., 3d Ser. vol. iv., p. 344; Ibid. vol. v., pp. 117-122, 

 293 ; Ibid. vol. vi., p. 300 ; Ibid. vol. xi., p. 163. 



UINTATHERIUM, Leidy. Pr. Ac. Nat. Sc., 1872, p. 169 ; Am. Joui>. of Sc., 3d 

 Ser. vol. iv., p. 239 ; Cont. to Ext. Vert. Faun., p. 96. 

 U. robustum, Leidy, loc. cit.; Uintamastix atrox, loc. cit. 

 U. Leidianum, sp. nov. This report, p. 3. 

 U. princeps, sp. nov. This report, p. Si. 



