546 Recently published Oi'nitho logical Works. [Ibis, 



chief criticism of the plates is that there is too much 

 scenery and too little bird in a good many of the cases, 

 but we cannot forebear our admiration of them as a whole. 

 The photogravures from" Mr. Beebe^s own photogra])hs give 

 one a wonderful idea of the country which the various 

 species inhabit, and the maps are of the greatest value 

 to illustrate the range. We congratulate Mr. Beebe, his 

 artists, and publishers on their joint achievement. 



Bouhier on Migrcttion Routes. 



[Les cinq (5ventails de migration des oiseaux de la faunc palearctique. 

 Par Maurice Boubier. Bull. Soc. Zool. Geneve, ii. pp. 216-228, map, 

 1919.] 



M. Boubier, after examining all the facts available, has 

 conceived the idea that the migration routes of the birds of 

 the Palsearctic Region are best represented by fan-like or 

 radiating lines, open towards the north, fan-like towards the 

 south. These five fans are, briefly : 



1. European-Senegambian. Birds breeding from western 

 Siberia to Greenland, passing south along western Europe 

 to western Africa. 



2. Caucaso-Zambesian. Birds breeding in south-eastern 

 Europe and western Asia pass through Egypt and along the 

 lied Sea to eastern Africa as far as Natal. 



3. Aralo-Malabaric. Birds of eastern Russia and central 

 Asia pass through Beluchistan to the western coasts of 

 India. 



4. Himalayan-Hindu. Birds nesting in the Himalaya 

 winter in the Indian plains. 



5. Sibero-Malayan. Birds nesting in eastern Siberia 

 and Kamchatka, passing soutli to eastern India and tiie 

 Indo-Malayan countries. 



The fans are shown depicted on a sketch-map, and 

 worked out with examples ; the idea is somewhat novel, 

 and this method of representing migration routes is 

 probably much more in accordance with the facts than 



