Palæochœus, European Miocene, 119

Palæohierax, European Miocene, 162

Palæolagus, N. American Tertiary, 140

Palæolama, S. American Pliocene, 147

Palæomephitis, European Miocene, 118

Palæomeryx, European Miocene, 120

Palæomys, European Miocene, 121

Palæontina oolitica, Oolitic insect, 167

Palæontology, 107

how best studied in its bearing on geographical distribution, 168