— 116 — 



In the young stage all of them have a more or less plain 

 purple-violet gloss — exactly as in the adult birds — , but this disap- 

 pears at the moulting time and the dress has then a more greenish 

 gloss. One of the females has the crown and hind neck a beau- 

 tiful steel-blue gloss, the others are blackish brown. 



In the specimens from Mombasa there are great differences 

 with regard to the white parts of the tail-feathers. 



One 9 bas, for instance, five of the tailfeathers broadly 

 tipped with white, which on the inner-web extends much higher 

 up than on the outer-web. (Fig. 1.) 



Another lacks this white entirely. 



A third has only a little white spot on the outer-web of the 

 two central rectrices. (Fig. 2.) 



Two cTcT have a white patch close to the ti.p (Fig. 3.) 



The head and neck of the young birds are yellowish brown 

 as a rule, and the white on the tail-feathers is small or missing 

 altogether. 



Irides dark-brown; bill and legs black. 



On Elgon this race was not nearly so common as 1. h. 

 jaJcsoni, and it was found as a rule only on the outskirts of the 

 forests or where there were thickets and brushwood. 



Caprimulgidae. 



Caprimulgus natalensis cJiadensis Alexander. — Bull. Br. Orn. 

 Club. vol. XXI, 1908, p. 90. 



1 (5 6. 6. Mount Elgon, 7.000 ft. 



This race was common in the acacia-country, below the 

 slopes of Elgon, especially where the ground was covered with 

 large and small boulders. 



The specimen is in full plumage. 



Grant has (Ibis, 1915, p. 303— 305) separated 5 forms 

 of natalensis and of these there cannot, in the present case, be 

 any question of any other than chadensis. 



In the original description it is stated that this form "is 

 of a pale sandy-brown colour", but my specimen is more rufous 

 both on the upper and the lower parts and may perhaps in 

 colour approach fulviventris from Angola. 



Mr. J. Chap in, New York, has shown me a specimen shot 

 by him in the vicinity of Lake Chad, which agreed in colour 

 with Alexander's description. 



Wing 150 mm; tarsus 20 mm.; tail 107 mm. 



Irides dark-brown; bill brownish red with dark tips, legs 

 pale flesh-red colour. 



