Mr. T. Ayres on the Ornithology of Transvaal. 287 



Zanzibar) evidently analogous to tlie musical notes of Melu 

 erax canorus and of M. gabar. — J. H. G.] 



Melierax CANORUs (Rislach) , Chanting Hawk. 



Adult, Rustenburg, June 10th. 



In the more northern and wooded parts of the Rustenburg 

 district this bird is common, and exceedingly tame in some 

 instances. 



Melierax gabar (Daud.). Gabar Hawk. 



Male adultj Rustenburg, August 8th. Iris brownish 

 lake-red. 



Female adult, Rustenburg, July 31st. Iris lake-red. 



Not by any means plentiful about Rustenburg. One of 

 these birds attempted to carry ofip a Golden-breasted Bunting 

 that I had killed, but failed in the attempt. 



310. Accipitbr minullus (Daud.). Least African Spar- 

 row- Hawk. 



Female immature, Rustenburg, July 1st. Irides pale gam- 

 boge-yellow ; cere and eyelids pale greenish yellow ; bill 

 black horn-colour ; tarsi and feet dingy pale yellow. 



The specimen sent is the only one which I saw during a 

 three months' stay in the Rustenburg district ; I found it on 

 a thickly wooded hill-side. 



TiNNUNcuLus cenchris (Naum.) . Grey-winged Kestrel. 

 Male adult, Potchefstroom, February 8th. 

 Female adult, near Potchefstroom, May 2. 



Bubo maculosus (Yieill.) . Spotted Eagle-Owl. 

 Male, Rustenburg, July 20th. Irides bright yellow. 

 This is a very scarce Owl about Rustenburg, the specimen 

 sent being the only which I saw whilst there. 



Glaucidium perlatum (Vieill.). African Pearl-spotted 

 Owlet. 



Male, Rustenburg, July 9th. 



Male, Rustenburg, July 26th. 



Female, Rustenburg, July 9th. 



In all the above the irides were bright gamboge-yellow, the 

 bill pale greenish yellow, and the feet pale dingy yellow. 



