— 102 — 



tree on which they have perched until one gets very close to 

 them. Then they fly about 10 meters with heavy and slow move- 

 ments and perch in the foliage ol the nearest tree where they at 

 once begin to call to each other. Their note consists of four or 

 five consecutive, short cries. 



On Elgon I mostly saw them in the vicinity of the water- 

 ways flowing through the forests. 



Reichenow (Wissensch. Erg. d. Deutsch. Zentr. Afr. Exp. 

 1907—1908, p. 228) has in 1912 expressed the opinion that Lo- 

 phoceros melanoleucos suahelicus Neum. is not a good sub-species 

 but considers that the South African L. ikcI. is identical with 

 that occurring in Eest Africa, van Some r en, however, in- 

 cludes it as a geographical sub-species in his work of 1915 (Ibis, 

 1915, p. 243) and if this latter view proves to be correct, then 

 all my 12 specimens belong to L. niel. suahelicus Neum. The 

 same observation that Reichenow (op. cit.) made with refe- 

 rence to the brown or black colour of the upper surface, accor- 

 ding to the various stages of the moult, I have also made in the 

 12 birds in my collection. But in separating the East African 

 form from the South African Neumann gives the following 

 distinguishing character: the former has considerably broader 

 streaks on the sides of the head; the latter has a few fine white 

 streaks on the side of the head. 



In the collections at the Berlin Museum, where I compared 

 specimens from South and East Africa, 1 was able to verify these 

 differences and therefore, like Zedlitz (J. f. 0. 1915, p. 24), 

 separate the two forms mentioned and let my specimens from 

 East Africa keep Neumann's name. 



As Heuglin (Ornithol. Nordost Afr. Bd. I. p. 721) has 

 already pointed out, this bird varies considerably in respect 

 to size and colour. Thus, some have the secondaries edged with 

 dark brown, others with lightbrown-greyish and again others 

 with white. 



The following table shows the 

 measurements: 



culmen, 



81 mm. 



84 mm. 

 100 mm. 



80 mm. 

 92 mm. 

 88 mm. 

 91 mm. 



82 mm. 



80 mm. 



85 mm. 

 77 mm. 



81 mm. 



