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