202 OUR SUMMER MIGRANTS. 



to the immediate neighbourhood of the Alps. 

 The name "White-bellied Swift" is not inappro- 

 priate, as indicating a peculiarity which distin- 

 guishes it from the common species. It is a 

 migratory bird, like the last-named, and, like it, 

 visits the Cape of Good Hope in winter, and 

 penetrates into North-west India. 



It is a summer migrant in Palestine, where 

 Canon Tristram observed it nesting near Mar 

 Saba, and in the tremendous ravine above the 

 site of Jericho. It arrives at Constantinople 

 from its winter quarters towards the end of 

 April, and is common in Corfu from May to 

 September, nesting annually in the Citadel 

 Rock (Lord Lilford, "Ibis," i860, p. 234). It 

 breeds in great numbers along the Etruscan 

 coast, and is occasionally seen at Pisa (Dr. Gi- 

 glioli, "Ibis," 1865, pp. 51-52). It has been 

 observed on passage in Tangier and Eastern 

 Morocco, and Mr. O. Salvin remarked that it 

 was common about the plains of the Salt Lake 

 district. Eastern Atlas, and breeding in most of 

 the rocks of that country (" Ibis," 1859, p. 302). 



