1919] Birds of the Canarij Islands. 123 



i. e. the Lesser Whitethroat, so that until Polatzek's bird 

 can be examined there must remain a doubt as to whether 

 he (Polatzek) considered Motacilla sylvia Linu, to be the 

 Common or the Lesser Whitethroat. I have little doubt 

 that the former will be the case. Up to the present we 

 have no record of the Lesser Whitethroat having visited 

 the Canary Archipelago. 



Range. S. c. communis breeds throughout Europe and 

 in uorthein Algeria and northern Tunisia. It winters in 

 Africa, extending south to Damaraland. 



Sylvia simplex. Garden-Warbler. 



Sylvia simplex Latham, Gen. Syn. Suppl. i. 1787, p. 287 

 — Type locality : England. 



The Garden Warbler is an Occasional Visitor during the 

 spring migration. 



Cabrera (Catalogo, 1823, p. 40) mentions having killed 

 one in the spring of 1890 at Laguna (Tenerife), the skin of 

 which was in his collection. 



Von Thanner records (Orn. Jahrb. 1912, p. 227) the 

 beginning of a migration of a very large number of Garden- 

 Warblers (' Gartengrasmiicke') on 11 May, 1912. 



It would appear therefore that this species on rare occa- 

 sions passes through the Canary Islands during migration. 

 Doubtless they often escape detection. 



Runye. The Garden- Warbler breeds throughout Europe 

 and winters in tropical and southern Africa. 



Sylvia atricapilla atricapilla. European Blackcap. 



Motacilla atricapilla Linn. Syst. Nat. 10th ed. 1758, 

 p. 187 — Type locality : Sweden. 



The European Blackcap is said to be a Bird of Passage in 

 considerable numbers to the Canary Islands in spring and 

 autumn. 



This must not be confused with the resident Blackcap of 

 the Canaries, which, on account of its slightly darker upper 

 parts, has by some authors been called S. a. obscura 'i'schusi. 



