- ^\2 — 



Even if in a number of cases the measurements for the 

 specimens from East Africa approach those for South African 

 birds it is by no means certain that they are tiierefore to be con- 

 sidered as the same form. It seems however very probable, but 

 I am not at present fully convinced on the matter and therefore 

 retain — although with hesitation — this fayi for the highland form. 



Zosteropidae. 



Zosterops virens jacksoni Neum. — Rchw. III. p. 430. 



3 (5(5 7. 5. Londiani environs, 8.000 ft. - 9 (5(5 ad. 19. 5.-7. 7.; 

 5 QQ ad. 24. 5.-28. 6. Mount Elgon. 



The first specimens of this bird was procured a day's march 

 to the north-east of Londiani. It was not uncommon here. On 

 the eastern slopes of Elgon it was very common, and I procured 

 specimens both from the bamboo forests higher up, and even 

 from the highest points in the alpine regions too. In other 

 words, the race occurred from 6.500 feet to over 12.000 feet. 

 It was especially numerous in the bamboo-forest, where it usually 

 appeared in fairly large flocks about 20 to 30 in number. They 

 have a weak piping call, which reminds one of the Tits, and like 

 these they are lively and active creatures. As a rule they frequent 

 the highest tops of the trees, where they are very difficult to 

 detect among the foliage, as their green plumage corresponds 

 exceedingly well to the environs. 



There is no difference between those from the alpine region 

 and those from the lower heights, but in both these groups there 

 are individuals in which the yellow band of the forehead is lighter 

 or darker. In one cT-specimen, shot on the 28. 5., the testes were 

 much swollen. 



Wing, tarsus, 



62 mm. 17 — 18 mm. cfcT Londiani. 



59—63 mm. 17—19.5 mm. cTcT Elgon. 



56-62 mm. 17-19 mm. 99 Elgon. 



Irides brownish red; bill black; legs leaden grey. 

 Lonnberg (Arkiv for Zool , Band 11, No. 5, 1917) has 

 described a new forn) from Londiani, to which he gives the name 

 of Zosterops buyeri, which differs from jacksoni, in having, among 

 other things, a larger culmen (11.7 mm.) and a larger wing- 

 measurement, 65 mm. instead of 58—62 mm, as in the latter. 

 In the collection of 17 spec, before me there are 3 from Lon- 

 diani, all of which have a bill-length of 11 mm., which is the 

 same as the measurements of the Elgon specimens. 



