Sea, as a barrier to mammalia, 13
Seals, fossil in European Miocene, 118
of Lake Baikal, 218
Secondary formations, mammalian remains in, 159
Secretary-bird of Africa, figure of, 261
Semnopithecus, European Pliocene, 112
Miocene of Greece, 115
European Miocene, 117
Indian Miocene, 121
Semper, Dr., on Philippine mammalia, 345