— 101 — 



casque, of a nearly full-grown bird. It marks a transition stage 

 between ray picture (a somewhat younger individual) and the 

 full-grown. 



Fig. 2. 

 The development of the casque of Bycanistes subcylindricus Scl. 



Foto : H. Graiivik. 



1. A rather young bird with slight developed casque. 



2. A young bird with the posterior part of the casque developed. 



3. An adult male with well developed casque. 



The region forming the casque is sharply sett of from the 

 rest of the culmen by means of a distinct border. 

 Irides brown; bill and legs as in the full-grown. 



Lophoceros melanoleucos suahelicus Neum. — 

 Journ. f. Ornithol, 1905, p. 187. 



2 <S(S 5. 5. ; 1 Q 5. 5. Londiani. - 6 QQ 16. 5. - 7. 6. ; 

 3 (5(5 23.5. - 7. 6. Elgon. 



Very common at Londiani, where I first procured a spe- 

 cimen of this race. I always saw them in small flocks and they 

 were found quite as often in the forests as on the acacia-steppe. 

 They jump restlessly from bough to bough and do not leave the 



