— 118 — 



birds were full-grown and the specimens I procured were all 

 birds of the year. 



I have seen the race in all sorts of localities, but always 

 in small or large flocks. It seems, however, to be a highland 

 bird, and in the acacia-country below the slopes of Elgon it 

 occurred practically speaking everywhere. 



The wing-measurement in the adult birds is 120 — 135 mm., 

 tarsus 12 — 15mm.; intheyoung 122- 126mm., tarsus 12— 13mm.— 

 Irides dark-brown; bill and legs black. 



Hirundo griseopyga griseopyga Sund. — Rchw. II. p. 403. 

 1 (5 ad. 17. 4; 1 g ad. 17. 4. Kiambu. 



Common in the districts around Nairobi. Occurred on 

 the outskirts of the forests where it frequented the swampy 

 regions hunting in company with Riparia paludicola ducis. 



In the female the white line above the lore is scarcely 

 noticeable, and although very indistinct even in the male it is 

 nevertheless discernible. 



cT wing 96 mm., tarsus 12 mm , 



9 ,> 95 mm., „ 12 mm. 



Irides dark-brown; bill black; legs dirty yellowish brown. 



Hirundo angolensis Boc. — Rchw. II. p. 409. 



H. arcticinata Sharpe. — Ibis: 1891, p. 119. — v. Someren: Ibis 1916, 



p. 373. 

 Hirundo angolensis arcticincta Sharpe. — Berger : Journ. f. Orn., 1911, 



p. 515. 



1 (5 ad. 6. 6.; 1 (5 juv. 6. 6. Mount Elgon, 7.000 ft. 



This swallow was breeding very commonly in the giant 

 caves on the eastern slopes of Elgon. Frequently the nests were 

 only Vs — 1 metre from the ground and usually in the outer 

 parts of the caves. Sometimes they were found high up on 

 the steep walls and rather far in the interior of the dark parts, 

 where the bats lived in countless numbers. 



The nests were comparatively small and lined with feathers 

 and hair. The eggs — generally three in number — were in 

 shape and colour like those of H. rustica, but somewhat smaller 

 in size. Owing to a mishap the eggs I procured were crushed 

 and the nests destroyed, and I am therefore unable to give any 

 further particulars. 



As Reichenow points out (op. cit.) Sharpe separates 

 Uganda specimens, which he calls H. arcticincta (terra typica: 

 Elgon) from true H. angolensis Boc. The former should have 

 the centre of the underparts of the body white, the latter, 

 greyish brown. 



