Hemibos, Indian Miocene, 122
Hemicyon, European Miocene, 118
Herpetotherium, N. American Tertiary, 134
Hesperomys, N. American Tertiary, 140
in Brazilian caves, 145
S. American Pliocene, 147
Hesperornis, N. American Cretaceous, 164
Heterodon, in Brazilian caves, 145
Hexaprotodon, Indian Miocene, 122
Hickman, Mr. John, on a cause of the extinction of large animals, 158