172 BIRDS OF EGYPT. 



Entire length 8 inches ; culmen 0*4 ; wing, carpus to 

 tip, 81. 



Fig. Gould, B. of Eur. pi. 53. 



151. Cypselus apus (Linn.). Common Swift. 



This is not the common Swift of Egypt ; nor do I know of 

 any authentic instance of its having been captured there. The 

 C. apus of Egyptian lists refers generally, if not invariably, to 

 the closely allied species C. pallidus, which is abundant and 

 the only species which 1 have met with in that country up 

 to the end of April. C. apus ranges throughout Africa and 

 Europe ; and as it visits Palestine, it must undoubtedly pass 

 through Egypt ; for this reason, rather than upon the testi- 

 mony of others, I have included it in the present list. 



Throat white, remainder of the plumage very dark brown, 

 almost black ; beak black ; irides very dark brown. 



Entire length 8'5 inches ^ culmen 04; wing, carpus to 

 tip, 8 ; tarsus 0"6. 



Fig. Gould, B. of Eur. pi. 53. 



152. Cypselus pallidus, Shelley. Egyptian Swift. 



This species is very abundant throughout Egypt and 

 Nubia. It has long been included in the Egyptian list as 

 C. apus, from which, however, it differs in its rather smaller size, 

 whiter throat, and general paler coloration, which latter cha- 

 racter suggested to me the name C. pallidus as appropriate 

 when I first described it (Ibis, 1870, p. 445). It may be 

 distinguished from C. apus at a considerable distance ; and 



