13 
Orper IV.—TOXODONTIA. 
55. Nesodontidae = Nesodon, Owen, Ph. T., 
1853, 291. 
56. Toxodontidae —= Joxodon, , Burm, A. 7M. 
B.-A., i, 254, 1864. 
Orprr V.—HYRACOIDEA. 
57. Hyracidae = Hyracidae, Gray, C. P. & E. 
M., 279. 
Orprer VI.—PROBOSCIDEA. 
58. Elephantidae < Proboscideae, Fale., Pal. 
Mem., 11, 1868. 
Elephantinae = Hlephantidae, Gray, C. P. & 
K. M., 358. 
Mastodontinae = Mastodontidae, Gray, C. P. & 
K. M., 359. 
59. Dinotheriidae = [Dinothériides,| Gaudry, An. 
Rade 32 62 
i 5 
MUTILATE SERIES. 
Orper Vil.—SIRENIA. 
(Halicoroidea.) 
60. Halitheriidue < Halicorida, Brandt, Symb. 
Siren., i, (f. 3,) 344. 
