The Geographical Distribution of Animals, Volume 1 / With a study of the relations of living and extinct faunas as elucidating the past changes of the Earth's surface

by Alfred Russel Wallace

Ophidia, classification of, 99

Opisthocomus, Brazilian caves, 164

Opossum, extinct, in European Miocene, 121

Oreodon, N. American Tertiary, 138

Oreodontidæ, N. American Tertiary, 138

Oriental region, defined, 75

subdivisions of, 75

description of, 314

zoological features of, 315

mammalia of, 315