Paramys, Leidy. Pr. Ac. Nat. Sc., 1871, p. 231; U. S. Geol. Survey,
1871, p. 357; Cont. to Ext. Vert. Faun., p. 110.
_P. delicatus_, Leidy, loc. cit.
_P. delicatior_, Leidy, loc. cit.
_P. delicatissimus_, Leidy, loc. cit.; Cont. to Ext. Vert. Faun., p.
111.
_P. robustus_, Marsh. Am. Jour. of Sc., 3d Ser. vol. iv., p. 218.
_P. superbus_, sp. nov. This report, p. 84.
_P. leptodus_, Cope. U. S. Geol. Survey, 1872, p. 609.
Mysops, Leidy. Pr. Ac. Nat. Sc., 1871, p. 232; U. S. Geol. Survey,
1871, p. 357; Cont. to Ext. Vert. Faun., p. 111.
_M. minimus_, Leidy, loc. cit.
_M. fraternus_, Leidy. Cont. to Ext. Vert. Faun., p. 112.
Pseudotomus, Cope. Pr. Am. Phil. Soc., 1872, p. 467; U. S. Geol.
Survey, 1872, p. 610.
_P. hians_, Cope, loc. cit.
Arctomys, Marsh. Am. Jour. of Sc., 3d Ser. vol. ii., p. 121.
_A. vetus_, Marsh, loc. cit.
Geomys, Marsh. Am. Jour. of Sc., 3d Ser. vol. ii., p. 121.
_G. bisulcatus_, Marsh, loc. cit.
Sciuravus, Marsh. Am. Jour. of Sc., 3d Ser. vol. ii., p. 122.
_S. nitidus_, Marsh, loc. cit.
_S. undans_, Marsh, loc. cit.
_S. parvidens_, Marsh, loc. cit., 3d Ser. vol. iv., p. 220.
Tillomys, Marsh. Am. Jour. of Sc., 3d Ser. vol. iv., p. 219.
_T. senex_, Marsh, loc. cit.
_T. parvus_, Marsh, loc. cit.
Tachymys, Marsh. Am. Jour. of Sc., 3d Ser. vol. iv., p. 219.
_T. lucaris_, Marsh, loc. cit.
Colonymys, Marsh. Am. Jour. of Sc., 3d Ser. vol. iv., p. 220.
_C. celer_, Marsh, loc. cit.