ii. 220

_Micropelama_, ii. 353

_Micropternus_, ii. 304

_Micropterus_, ii. 364

_Microscelis_, ii. 267

_Microstoma_, ii. 448

_Microsyops_, N. American Tertiary, i. 133

_Microtherium_, European Miocene, i. 120

_Midas_, ii. 176

Middendorf, on extreme northern birds, i. 219

_Midea_, ii. 478

_Miglyptes_, ii. 304

Migrating birds, in which region to be placed, i. 185

Migration of animals, i. 10 general phenomena of, i. 18 of birds, i. 19 of birds in Europe, i. 19 probable origin of, i. 22 of birds in India and China, i. 23 of birds in N. America, i. 23 changes in extent of, i. 24 of birds in S. Temperate America, i. 25 general remarks on, i. 25

_Miletus_, ii. 477

_Milvulus_, ii. 102, 291

_Milvus_, European Miocene, i. 162