136 



LOPHIODON. 



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



L. affinis, 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., Fann, 

 p. 6g. 



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



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

 0. iiiiitamim. 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. validmn, Marsh, loc. cit. 



ARTIODACTYLA. 



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

 Elotherium. 



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



Platygonus. 



P. Zicgleri, 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, 1S72, p. 169 ; Am. Joui>. of Sc, 3d 

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

 U. robustum, Leidy, loc. cit.; Uintamaslix atrox,\oc.c\i. 

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

 U. princeps, sp. nov. This report, p. 81. 



