1922.] the Near East and Tropical East Africa. 41 



Nakuru. Some birds I obtained at Nakurii in 1916 could 

 certainly be assigned to either of the above races on their 

 original deseri))tions, and I have no hesitation in [ilacing 

 roehli and nakuruensis as synon3'ms of shelleyi. 



Apns a. shi'Uei/i is a small edition of A. a. pekinensis. In 

 fresh plumage the head and upper parts are as in pekinensis, 

 but with slightly less sheen on the mantle. The centre of 

 the back is more or less suffused with dark blackish-blue, 

 which almost entirely wears off as the season advances. 

 Scapulars much paler brown than in either ^1. a. apus or 

 jyekinensis. Primaries black with a bluish gloss on the outer 

 web and an oily-green gloss on the inner web. Under parts 

 and lower back with frequently paler scale-like fringes. 

 Throat and chin white to dusky-white, the feathers always 

 having darker shaft-stripes. Generally a much smaller bird 

 than either of the preceding races. 



1 have examined the following birds : — 

 Sex. Locality. Date. Winy. 



S Nakuru 2(3. xii. 155 



S Naivasha 20. x. 151 



S Nakuru 14. v. 158 (type oi nakuruensis). 



(S Nakuru 20. xi. 151 ' 



J Kavirondo 12. iii. 146 



2 Nakuru 20. xii. 154 



2 Nakuru 26. xii. 159 



? Usambara ? 165 (co-type of roehli). 



2 Nakuru 26. viii. 154 



(i (^ S Abyssinia - iv. & - v. 148,158,161 



2 Abyssinia ? 148 



d" Naivasha - v. 160 



2 2 Kikuyu, Kenya Col. ? 150, 154 

 (^ Kenya Colony - iv. 150 



This race apparently inhabits Abyssinia, and occurs at 

 Naivasha, Kikuyu, Nakuru and Kavirondo, in Kenya Colony, 

 and in the Usambara Hills between Kilimanjaro and the 

 coast. 



A Swift in the British Museum from Zomba in Nyasaland 

 probably constitutes a further race of .1/^/5 apus, having a 

 win<>- measurement of but 141 mm. 



