VOL. IX.] ADDITIONS AND CORRECTIONS. 8 



to inhabit Transcaspia, Turkestan, Afghanistan, and Tibet, 

 has been found on migration so far to the south-west as 

 Algeria and the western Sahara. It is greyer on the upper- 

 parts than the typical form, this distinction being especially 

 noticeable on the crown, which is never reddish as in the 

 typical form. The wing is also usually slightly longer and 

 the bill often slightly more slender than in the typical form. 



6s. Alauda arvensis cinerascens Ehmcke. 



Alauda cinerascens Ehmcke, Jourii. f. Orn., 1904, p. 313. 



instead oi A. a. cinerea Ehmcke. 



Ehmcke altered the name cinerea because it was preoccupied 

 by Alauda cinerea Gmelin, Syst. Nat., I., 2, p. 798, 1789. 

 According to Art. 36 of the " International Rules " a rejected 

 homonym can never again be used, and therefore Ehmcke's 

 alteration must be accepted. 



72. Anthus spinoletta petrosus (Mont.). 



Alauda petrosa ^Montagu, Trans. Linn. Soc. London, IV, 

 p. 41 (1798— Wales). 



instead of A. s. obscurus (Lath.). Some months ago Mr. T. 

 Iredale kindly pointed out to us that obscurus of Latham, 

 1790, could not be used owing to its prior use by Gmelin 

 {Alauda obscura Gmelin, Syst. Nat., I., 2, p. 801, 1789). See 

 under No. 63. 



78. Motacilla fiava feldegg Michahelles. 



MoTACiLLA Feldegg Michahelles, Isis 1830, p. 812 (1830— 

 Valleys of southern Dalmatia). 



instead of Motacilla melanocephala Licht., which is preoccupied 

 by M. melanoce/phala Gmelin 1789, and therefore the next 

 oldest name, M. feldegg, must be used. See under No. 63. 



80. Motacilla cinerea cinerea Timst. 



Motacilla Cinerea Tvuistall, Orn. Brit., p. 2 (1771 — New 

 name for the " Grey Water Wagtail " and " Hoche-queue ou 

 Bergeronette jaune " of the Zool. Brit, and Brisson). 



instead of Motacilla b. boarula L. 



Mr. T. Iredale has pointed out to us that the earliest 

 reference to Motacilla boarula is Scopoli, Annus I Hist. Nat., 

 p. 154, 1769, and this reference is given in the B.O.U. List 

 (1915). It is clear, however, that Scopoli described (p. 153) 

 the '' Grey Wagtail " as Motacilla flava, and named the 

 " Blue-headed Wagtail " Motacilla boarula ! He says that 

 his M. flava is not gregarious, non-migratory, and found 

 along rivers, and that it has a grey back and yellow rump ! 

 Of his M. boarula he says only that it is smaller than his 

 flava, gregarious, and not aquatic, follows the herds on the 



