2 



b'. ]Minor: ala 4 poll. : subtus alba, dilute fumoso-brun- 



neo lavata : cauda minus furcata 2. cashmiriensis , p. 19. 



b'" . Mentum et genaj ad basin nigrte : subtiis alba, funioso- 



brnnneo lavata : cauda miiiiis furcata 3. dasypus, p. 23. 



b". Supracaudales longiores albie, reliquse concolores : mentum 



minimi nigro maculatum : cauda paullo furcata .... 4. lagojms, p. 25. 



b'. Rectrix e.Ktima intus albo notata 5. albigena, p. 29. 



b. Subcaudales nigrfE 6. nipalensis, p. 31. 



No species of House-Martin is found in the New World, nor does any species, so far as 

 we know, occur within the liiuits of the Australian Region. In the Palaearctic Region 

 the House-Martins are universally distrihuted, breeding in the Eurasian Sub-Region 

 even beyond the Arctic Circle. C. urbica is the western species and is replaced in 

 the Central Siberian province and thence eastwards by C. lagojms, whilst still further to 

 the eastwards C dast/jms takes its place in the Japanese Islands. Our information as 

 to the House-Martins in Central Asia and their distribution seems to us to be still 

 imperfect, but even the winter-ranges of C. wMca and C. lagopus appear to preserve the 

 eastern and Avestern cliaracter of their breeding-habitats. In the case of the Common 

 Martin, as has been noted with many other Swallows, there is a tendency to found 

 breeding-colonies in outlying districts, as, for instance, in the Nilghiris. Of C. albigena 

 we still know so little that we cannot speculate upon its distribution. C. cashmiriensis 

 is a southern form of C. urbica and is characteristic of the mountainous fauna included 

 in the Himalo-Chinese Sub-Region ; while C. nipalensis, the most aberrant member 

 of the genus Chelidoii, is strictly an inhabitant of the northern Himalo-Malayan Sub- 

 Region. 



