1918.] t}ie Birds oj the Anglo-Egyptian Sudan. 613 



[B. coll.] 2 Khartoum Mcli. Dec. 



The December bird has a pronounced white eye-stripe. 

 This form has been previously recorded by Hartert from the 

 Sudan. 



Motacilla flava, subsp. ? 



[B. coll.] 1 Khor Arbat May 13, R.S. ; 6 Khartoum 



Oct. 31 to Apl. 5. 

 [C. & L. coll.] 2 Singa Dec. Sen. ; 1 Hassania I. Jan. 11, 



1 Lat. 15° Jan. 9, W.N. ; 1 Meshra Zeraf Jan. 23, 



U.N. 

 [Chr. coll.] 1 Yambio Mch. B.G. 



These are all youug birds and cannot be identified with 

 any certainty. 



The other races of Yellow Wagtails which in all pro- 

 bability pass through the Sudan, though they are not 

 represented in these collections nor in the British Museum 

 collection from this locality, are : — 



1. M. F. CAMPESTRis. This Certainly occurs ; it is reported 

 l)y Butler (Ibis, 1905, p. 306) as common, also by Heuglin 

 (Orn. Nordost-At'r. p. 322). Some of the young birds in 

 the collection no doubt belong to this race. 



2. M. F. BOREALis. This bird also almost certainly 

 occurs, although we have not been able to find an adult 

 specimen which we could absolutely definitely assign to 

 this race. 



3. M. F. ciNEREOCAPiLLA. Hartert (Vog. pal. Faun, 

 p. 293) reports an example from Lado. There is no reason 

 why it should not occur on migration throughout the 

 Nile valley. 



It is possible that the resident Egyptian race, M. f. 

 pygmaea., occurs sometimes in the Sudan, but we have as 

 yet no evidence of it. We do not think the bird men- 

 tioned by Butler (Ibis, 1909, p. 392) belongs to this 

 form, we believe it is a scarcely ad\ilt and rather small 

 example of M. f. flava. 



