1918.] B. O. U. List of British Birds. 239 



7 June, 1915^ at Pevensey Sluice, Sussex, was examined by- 

 Mr. Witherby and identified by him as an example of the 

 North African form of the species (British Birds, ix. 1916, 

 p. 200). 



The usual range of this form of the Black Wheatear is 

 in North Africa from Morocco to Egypt. 



p. 110. For Muscicapa coUaris read 



Muscicapa albicoUis. 



Muscicapa albicollis Temminck, Man. d'Orn. 1815, p. 100 : 

 Germany. 



Muscicapa collnris Bechstein, 1794, is invalidateil by 

 Muscicapa collaris Latham (Index Orii. 1790, p. 471) 

 which refers to an African bird now known as Platystira 

 cyanea ; the next available name appears to be the one 

 given above. 



p. 142. For Aquila fusca read 



Aquila clanga. 



Aquila clanga Pallas, Zoogr. Rosso- Asiat. i. 1827, p. 351 : 

 Russia. 



Aquila fusca Brehm, 1823, is pre-occupied by Aquila fusca 

 Dumont, Diet. Sci. Nat. i. 1804, p. 344, used for a bird 

 which appears to be the Golden Eagle in immature plumage 

 {cf Iredale, Ibis, 1915, p. 388). The name of the Spotted 

 Eagle should, therefore, be Aquila clanga Pali., as formerly 

 pointed out by Blanford (Ibis, 1894, p. 286). 



p. 162. 



The American Brent Goose appears to be merely a 

 colour variation of the European form : both dark- and 

 light-breasted Brents nest together. In any case the name 

 glaucogaster cannot be used for the American form, as the 

 bird so called by Brehm was a dark-breasted European 

 individual. The type is not in the Tring Museum and has 

 been lost sight of, but Brehm's description is quite clear. 



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