134 



Oreocyon, Marsh. Am. Journ. of Sc, 3d Ser. vol. iv., p. 406 

 O. latideiis. Marsh, loc. cit. 



Thinocyon, Marsh. Am. Journ. of Sc, 3d Ser. vol. iv., p. 204. 

 T. velox. Marsh, loc. cit. 



ViVERRAvus, Marsh. Am. Journ. of Sc, 3d Ser. vol. iv., p. 127. 

 V. gracilis. Marsh, loc. cit. 

 V. (?) nitidus. Marsh, loc. cit., p. 205. 



ZiPHACODON, Marsh. Am. Journ. of Sc, 3d Ser. vol. iv., p. 216. 

 Z. rugatus. Marsh, loc. cit. 



VuLPAVUS. Marsh. Am. Journ. of Sc, 3d Ser. vol. ii., p. 124. 

 V. palnsUis, Marsh, loc. cit. 



MiAcis, Cope. Pr. Am. Phil. Soc, 1S72, p. 470. 



M. parvi varus, loc. cit. ; Viveravus par7'ii>oriis, U. S. Geol. Survey of Terrs., 

 1872, p. 560. 



Mesonyx, Cope. Pr. Am. Phil. Soc, 1S72. p. 460; U S. Geol. Survey of 

 Terrs., 1872, p. 550. 

 M. obtusidens. Cope, loc. cit. U. S. Survey, p. 552. 



Synoplotherium, Cope. Pr. Am. Phil. Soc, 1S72, p. 483 ; U. S. Geol. Survey 

 of Terrs., 1872, p. 554. 

 S. latiius. Cope, loc. cit. U. S. Survey, p. 557. 



Stypolophus, Cope. Pr. Am. Phil. Soc, 1S72, p. 466 ;- U. S. Geol. Survey of 

 Terrs., 1S72, p. 559 ; Wheeler's Survey, vol. iv. , p. log. 

 S. insectivoriis. Cope. Pr, Phil. Soc, 1872, p. 469 ; U. S. Survey, 1872, p. 557. 

 S. pungens, Cope, loc. cit., pp. 466, 559 

 S. hrevicalcaratiis. Cope, loc. cit., pp. 469, 560. 



Megencephalon, gen. nov. This report, p 20. 

 M. primavus, sp. nov. This report, p. 20. 



UNGU LATA. 



PERISSODACTYLA. 



Anchitherium. 



A. (?) . This report, p. 23. 



Orohippus, Marsh. Am. Journ. of Sc, vol. iv., p. 207 ; vol. vii., p. 247. 



0. pumilus. Marsh, loc. cit., 3d Ser. vol. iv., p. 207. 



0. agilis. Marsh, loc. cit., 3d Ser. vol. v., p. 407. 



O. major. Marsh, loc. cit., vol. 3d Ser. vii., p. 248. 



O. _^;-a«7«j-, Marsh, loc. cit., 3d Ser. vol. vii., p. 249; Aiichitheriunt ^i\iri/\ 

 3d Ser. vol. ii., p. 38. 



0. procyoninus. Cope. Pr. Am. Phil. Soc, 1872, p. 466; U. S. Sur\cy, 1S72, 

 p. 606, 



