Pœbrotherium, N. American Tertiary, 138
Polynesian sub-region, description of, 442
birds of, 443
reptiles of, 447
Post-Pliocene, mammalia of Europe, 110
remains imply changes of physical geography in Europe, 111
fauna of N. America, 129
fauna of N. America, remarks on, 130
Potamogale of West Africa, figure of, 264
Potamotherium, European Miocene, 118