10 Mr. W. L. Sclater on Birds collected 



this case tlie former will be C. cinereus Vieill. and the latter 

 C. pectoralis Smith. 



I have the following reasons for coming to this con- 

 clusion : — 



(1) Although in other respects the two forms do not differ 



in size, the bill of C. pectoralis is constantly and 

 markedly smaller ; in five examples in the British 

 Museum it varies from 34 to 36 mm. measured with a 

 pair of dividers from the front of the cere to the tip of 

 the beak. In five examples of C. cinereus the bill 

 measured in the same way averaged 44 mm. 



(2) There seem to be no intermediate stages between the 



two forms, as one would expect to find if they were 

 difi'erent plumages of the same species. 



(3) As is shown by j\Ir. Grant's field-notes_, C. cinereus breeds 



in the brown plumage. 



I have examined the following additional examples in the 

 British Museum : — 



C. pectoralis — ''Cape of Good Hope" {Lauyier), "Cape 

 of Good Hope^^ {Derby), Ondonga ? {Andersson) , Paugani 

 lliver (Kirk), and Brava, S. Somaliland {Kirk). The last- 

 named is considerably smaller than the others. 



C. cinereus — S. Africa i^S.A. Mus.), King William's Town 

 {Trevelyan), Durban {Warwick), Ft. Chiquaqua, Mashona- 

 land $ {Soiverbij) , Nyasaland 3 ex. (S/iarpe and Manning), 

 Humbe ? {Anchieta). 



[I have found this Eagle nowhere common, and have only 

 noted it from the Northern Transvaal and from the luhambane, 

 Beira^ and Gorongoza districts of Portuguese East Africa. 

 It is generally seen circling over the tops of the bushes or 

 perched on the topmost branches of some prominent tree. 

 It is very Avild and difficult of approach, even to get within 

 good rifle-shot. It breeds in the forks of the larger trees, 

 and I discovered a nest near Legogot in May so placed 

 in a solitary tree on a hillside. It was a huge mass 

 of sticks, and contained one young bird recently hatched. 

 Both the parents were flying around, but were too wary to 



