ADDITIONS AND COEEECTIONS 



The following additions and corrections bring the work up to the 

 end of 1923, but it has been found impossible to enumerate the 

 extra -liinital allied subspecies which have been differentiated since 

 the various parts of the work went to press, and only the more 

 important additions and corrections to distribution abroad have 

 been inserted. Synonyms given to British birds, where omitted 

 from the body of the work, have been inserted, but not " nomina 

 nuda " nor in most cases mere substitute names. 



VOLUME I 



Page 



*vii Basi-pterygoid. — Substitute as follows : The name used for a pair of 



bony projections, or processes, from one of the bones of the base of the 



skull (the basi-sphenoid) which (when present and functional) give 



support to the pair of pterygoid bones. 

 *xiv Upper figure, read " method used by us in measuring the bill from 



its tip to the cranio-facial hinge " instead of " base of skull." 

 3. Lines 1 and 4, for " thigh " read tibia. 



10. The Raven. 



Allied form. — C. c. umbrinus 1838 must be called C. c. ruficollis 

 Lesson, 1831. 



11. Distribution-. — Also breeds north Somerset; bred Shropshire 1918 

 and 1920. 



14. The Carrion-Crow. 



Nestling. — Down rather scanty, fairly long, pale dusky-grey ; distribu- 

 tion inner supra-orbital, occipital, spinal, femoral, humeral and ulnar 

 (H.F.W.) " Mouth inside bright pink, flanges horn-colour with pink 

 tinge." (J. H. Owen.) 

 Soft-parts. — Iris of juvenile pale greyish. (F. C.R.J.) 



15. Breeding-habits.- — Probably female alone incubates. 

 Distribution. — Occurred O. Hebrides, Lewis 1909, July 1911, April 

 1916, N. Uist. Aug.-Sept. 1914, Swanibost Sept. 1914 ; stated to have 

 bred twice in S. Uist. Recorded breeding off Dublin coast but subse- 

 quently shown to be Raven. 



"22. The Magpie. 



First winter. — Juvenile tail-feathers, or some of them, are also moulted. 

 (H.F.W.) 



23. Distribution. — One (perhaps breeding) Norfolk July 1919, others 

 autumn and winter probably migrants. Increased in numbers locally 

 during the war. 



.28. The Continental Jay. 



Distribution.— Specimens identified — Norfolk, three Jan. 1918, one 

 Oct. one Dec. 1918, Oxford, one Jan. 1917, Sussex, one Dec. 1903, Kent 

 one, Tonbridge 1920. 



887 



