Birds of the Caucasus. 19 



Sylvia familiaris. 



The Grey-backed Warbler was originally described from 

 the Caucasus, where it breeds, 



Sylvia nisoria. 



The Barred Warbler is a summer visitor to the Caucasus, 



Sylvia atricapilla. 



The Blackcap is a summer visitor to the Caucasus. 



Sylvia hortensis. 



The Garden- Warbler is a summer visitor to the Caucasus, 



Sylvia curruca. 



The Lesser Whitethroat is a summer visitor to the Caucasus. 



Sylvia cinerba. 



The Whitethroat is a common summer visitor to the 

 Caucasus. 



Sylvia mystacea. 



Bowman^s Warbler was first described from the Caucasus, 

 I had an opportunity in St, Petersburg of examining a fine 

 series of this bird from the banks of the Kur, collected by 

 Menetries, aud from Turkestan. Fully adult males in breed- 

 ing-plumage are vinous-brown on the breast and flanks, 

 but may easily be distinguished from a somewhat similar 

 plumage of S. subalpina by their dark slate-grey head and 

 cheeks. It is to be regretted that Dresser, in his ' Birds of 

 Europe/ after confusing this species partly with S. melano- 

 cephala and partly with S. subalpina, should, after tardily 

 admitting its specific distinctness, have adopted the name 

 of S. momus, in direct violation of the Stricklandian code, 

 to which he generally adheres. 



Accentor alpinus. 



The Alpine Accentor is found in the mountain -valleys of 

 the Caucasus. 



Accentor modularis. 



The Hedge-Sparrow is also found in the Caucasus. 



Motacilla alba. 



The White Wagtail appears to be a common summer visitor 



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