range of Ethiopian genera of, 311

range of Oriental genera of, 384

range of Australian genera of, 485

Comoro islands, zoology of, 281

Continents, distribution of, 37

recent changes of, 38

Continental extension in Mesozoic times, 156

Corvus, European Miocene, 161

Coryphodon, European Eocene, 126

Cosmopolitan groups enumerated, 175