92 BIRDS OF SOUTH AFRICA. 
back ; throat, white; bill, plack ;_ toes, dusky ; iris, dark hazel. 
Total length, 7°5 inches; wing, 7-4; tail, 3°5; tarsus, 0-5. 
Fg. Dresser, B. Eur. part xxxi. 
87. CypsELUS PALLIDUS. Pallid Swift. 
This species is closely allied to the ordinary Swift, and was first dis- 
tinguished by Captain Shelley, who procured it in Egypt, and since 
then it has been obtained in Morocco and Southern Spain by Colonel 
Irby, and in Malta by Mr. C. A. Wright. It arrives in Europe before 
C. apus, and in South Africa, which is doubtless its winter home, it 
seems to occupy a different area to the last-named species, for, whereas 
C. apus goes right down to the Cape, C. pallidus has not yet been 
noticed further south than Damara Land. Mr. E. Cavendish Taylor 
possesses a specimen shot by the late Mr. Andersson at “ Nonnidas, 
Swakop River,” on the 11th of December, 1863, and the British 
Museum contains an example procured by Mr. Monteiro in Benguela, 
where, according to the latter gentleman, it is “ common, building 
its nest very commonly under the eaves of houses.” It should be 
noted that Mr. Monteiro’s specimen differs in being uniform above 
and below, though very pale in colour, and shews little or no throat- 
patch. Prof. Barboza du Bocage mentions a Swift from Loanda, 
which may possibly be the same as the Benguela bird; he was 
inclined to consider his specimen undescribed, but Dr. Finsch 
referred it to the Madeiran 0. wnicolor. It is, therefore, possible 
that a further supply of specimens may shew the existence of 
another species in 8. W. Africa, but be that as it may, Mr. Taylor’s 
bird is undoubtedly OC. pallidus, and this is sufficient warrant for 
our including it in the present work. His specimen measures :— 
Total length, 6°7 inches; wing, 6°8 ; tail, 3-0; tarsus,0°-45.  ~ Tl 
C. pallidus may be described as being closely allied to OC. apus 
but smaller and paler, being pale brown or mouse-colour, with 
generally indications of whitish edgings to the feathers. | 
Fig. Dresser, B. Eur. part xxxv. 
88. CyYPsELUS CAFFER. African white-ruamped Swift. 
This species can be easily distinguished from C. apus, even on the 
wing, by its smaller size and conspicuous white rump. It is con- 
