NOVITATKS ZOOLOGICAE XXII. 1915. 251 



49. Circaetus cinerascens Blilll. 



1 ad., Zaria. 



1 juv., Kadnna River, province of Zaria. 



This bird, as well as another collected on the Amambara (ireek, River 

 Niger, by Brahaui, agrees with the description by Reichenow {Vdt/. A/r. i. pp. 

 573, 574). 



50. Lophoaetus occipitalis (Daud.) 



¥ ad., Zaria, 1. x. 191L'. 



1 ad., Kaduna River, province of Zaria. 



;">]. Aquila rapax albicans Riipp. 



One, province of Zaria. 



1 suppose this Eagle must belong to the N.E. African race, A. r. albicans. It 

 is a pale buffish-brown bird, evidently juvenile, and agrees fairly well with some 

 Abyssinian examples. As so many forms range across the Sudan from N.E. 

 Africa to Senegambia, there would be nothing strauge in the occurrence of 

 A. r. albicans in Hausaland. On the other hand, ^1. r. belisarius, the insufBciently 

 known subsjiecies from Africa Minor, does not reach across the )Sahara. 



52. Aquila (Hieraaetus) wahlbergi Suud. 



¥, Zaria, 24. xi. 1912. 



Moulting from the pale creamy brown plumage into that of the adult, which is 

 dark brown. Pale specimens are not old, but on the contrary in juvenile dress. 



53. Milvus migrans parasitus (Daud.) 



1 med., province of Zaria. 



The bill is beginning to get yellow, thus showing that it is parasitus and not 

 M. m. miyrans. Another specimen in first plumage has the bill quite black, and 

 might possibly belong to M. m. miyrans. 



54. Elanus caeruleus caeruleus (Desf.) 



1 ad., province of Zaria. 



00. Nauclerus riocouri (Vieill.) 



3 ad., province of Zaria. 



One of these bas the wings 253, the tail 216 mm.; the other two wings 242 and 

 244, tails 178 and 200 mm. These differences are probably sexual, but nothing 

 definite about this appears to be known. In 1885 I found this graceful bird, which 

 is very beautiful on the wing, not rare in North Hausaland ; its food was then 

 Orthoptera. 



56. Falco biarmicus abyssinicus Nenm. 



Cf. A'tit'. Zool. mitea, p. 177. 



2 ¥ ¥ ad., Zaria, 6. x., 9. xi. 1912. 



1 ad., in moult, Kaduna River, province of Zaria. 



