3i6 



IXDEX 



Machairodus latidens^ 36 



Madagascar, birds of, 190 



Madagascar, sub-fossil remains of 

 hippopotamus in, 306 



Madeira and the Azores, birds of, 

 202, 203 



^Madeira, birds of, 190 



Malta, birds of, 189 



Mammalia of West Europe and 

 British Area, 104 



Map showing Range Base or 

 Refuge Area I., 47 



Map showing Range Base or 

 Refuge Area II., 71 



Map showing Range Base or 

 Refuge Area III., 95 



Map showing the 40-Fathom, 20- 

 Fathom, and 15-Fathom Con- 

 tours of the British Area, 21 



!Map showing the loo-Fathom and 

 50-Fathom Contours of the 

 British Area, 5 



Mediterranean Area, condition 

 of during Ice Age, 29 



Melierax polysonus, 41 



Mcriila jiierula, present emigra- 

 tions of, 171 



Migrants, British summer, from 

 the South-east, 84 



Migrants, circuitous routes of to 

 West Africa, 82, 83 



Migrants, gradual advance north- 

 wards of in spring, 251 



Migration, altitude of, 238 



^ligration, daily time of, 240 



Migration from the British Area, 

 abnormal lines of, 245, 246 



Migration from the East, general 

 aspects of, 265, 266 



Migration, impulse of, 234 



Migration, impulses to, 212 



Migration in autumn, abnormal 

 lines of, 267 



Migration more apparent in 

 autumn than in spring, 260 



Migration, order of, 239, 240 



Migration periods, duration of, 

 264 



Migration Routes, definition of, 

 210 



Migration Routes, inland con- 

 tinuation of, 232, 233 



Migration, Routes of most fol- 

 lowed, 231 



Migration Routes, persistency 

 shown by birds in following, 223 



Migration, the perils of, 241, 242 



Milviis ictimis^ 46 



Months of spring passage of 

 various species, 248 — 251 



Motacilla cincrcocapilla^ 100 



Motacillaflava, 99 



Motacilla melanoccphala^ 100 



Mountains of torrid zone, Flora of 

 during pre-glacial ages, 297, 

 298 



Muscicapa hyperyihra^ 89 



Muscicapa parva, 89 



Myodes torquatus, 23 



Xearctic Emigration, 107 



Nccroriiis^ 38 



Xectaritiia^ 32 



Xewton, Professor, on the Great 



Flood in the Fens, 186 

 North-east Africa, 31 

 North-eastern Migrants, departure 



of, 244, 245 

 Northern and Southern groups of 



birds, 303 

 Northern birds, spring migration 



of, 248 

 Northern Emigration from Ant- 

 arctic centres, obviously erro- 

 neous, 302 

 Northern Floras, effects of Glacial 



Epoch on, 298 

 North Russia, emigration of birds 



to, 142, 143 

 North Sea, migration across, 224, 



226 

 North Sea Plains, submergence 



of, 131 

 North Sea Plains, the, 131 

 North Sea Routes, origin of, 227, 



22S 

 North-west Africa and Europe, 



homogeneity of fauna and flora 



of, 32 

 North-west Africa, during Plio- 



