135 



Pal/kosyops, Leidy. Pr. Ac. Nat. Sc, 1S70, p. 113; 1871, pp. 114, ii8, 197, 

 229 ; 1872, pp. 168, 241 ; U. S. Geol. Survey, 1870, p. 355 ; 1871, p, 358 ; 

 Com. to Ext. Vert. Faun., p. 27 ; Cope, U. S. Geol, Survey of Terrs., 

 1872, p. 591. 



P. paludosits, Leidy, loc. cit. Cont. to Ext. Vert. Faun., p. 28. 



P. major, Leidy. U. S. Geol. Survey of Montana, 1871, p. 359; Pr. Ac. 

 Nat. Sc, 1872, pp. 168, 241 ; Cont. to Ext. Vert. Faun., p. 45. 



P. huinilis, Leidy. Pr. Ac. Nat. Sc, 1872, p. 168, 277 ; Cont. to Ext. Vert. 

 Faun., p. 58. 



P. Ju;iiiis, Leidy. Pr Ac. Nat. Sc, 1872, p. 277 ; Cont. to Ext. Vert. Faun., 

 P- 57- 



P. hcvidciis. Cope. Pr. Am. Phil. Soc, 1873; U. S. Survey, 1S72, p. 591. 



P. vallidens. Cope. Pr. Am. Phil. Soc, 1872, p. 487 ; loc. cit., p. 592. 



/'. minor. Marsh. Am. Journ. of Sc, vol. ii., p. 36. 



LiMNOHYUs, Leidy. Pr. Ac. Nat. Sc, 1872, p. 242 ; Cont. to Ext. Vert. Faun., 

 p. 58 ; Marsh, Am. Journ. of Sc, 1872, 3d Ser. vol. iv., p. 124. 

 L. laticeps. Marsh. Palaosyops iaticeps. Am. Journ. Sc. 3d Ser. vol. iv., p. 122. 

 L. rohiistus. Marsh, loc. cit., p. 124, is same as P. major, Leidy. 

 /.. diaconiis. Cope. U. S. Geol. Survey of Terrs., 1S72, p. 593. 

 /,. foutinalis. Cope, loc. cit., 594. 



Tk.l.matherium, Marsh. Am. Journ. of Sc, 3d Ser. vol. iv., p. 123. 

 T. validiim, Marsh, loc. cit. 



Leurocephalus, gen. nov. This report, p. 42. 

 /,. cultiidens, sp. nov. This report, p. 42. 



Hyrachyus, Leidy. Pr. Ac. Nat. Sc, 1S71, p. 229 ; 1872, pp. 19, 163 ; U. S. 

 Geol. Survey, 1S71, p. 360 ; Cont. to Ext. Vert. Faun., p. 60. 



//. agrarius, Leid)', loc. cit.; H. agrcstis. U. S. Survey, 1S71, p. 357. 



H. cximiiis, Leidy. Pr. Ac. Nat. Sc, 1871 p. 229 ; 1S72, p. 163 ; U. S. Geol. 

 Survey of Terrs., 1S71, p. 361 ; Cont. to Ext. Vert. Faun., p. 66; Cope, U. S. 

 Geol. Survey of Terrs., 1S72, p. 595. 



//. niodestus, Leidy. Pr. Ac. Nat. Sc, 1S72, p. 20; U. S. Geol. Survey of 

 Terrs., 1S71, p. 361 ; Cont. to Ext. Vert. Faun., p. 67; Lophiodon modestits, Pr. 

 Ac Nat. Sc, 1S70. p. 109. 



H. nanus. Leidy. Pr. Ac. Nat. Sc, 3d Ser. 1872, p. 20 ; U. S. Survey, 1871, 

 p. 361 ; Cont. to Ext. Vert. Faun., p. 67. 



PI. princcps. Marsh. Am. Journ. of Sc, 3d Ser. vol. iv., p. 125. 



FI. impUcatiis, Cope. On Some Eocene Mammals, p. 5 ; U. S. Survey, 1872, 

 p 604. 



//. crassidt-ns, sp. nov. This report, p. 52. 



//. imperialis, sp. nov. This report, p. 50. 



H. intermedials, sp. nov. This report, p. 51. 



//. paradoxus, sp. nov. This report, p. 53. 



Helalete.s, Marsh. Am. Journ. of Sc, 3d Ser. vol. iv., p. 218. 

 //. hoops. Marsh, loc. cit. 

 H. latidens, sp. nov. This report, p. 54. 



