380 



4 

 In the preparation of the above article we have examined the following specimens : 



E Mus. Sharpe and Dresser, 

 a, b, c. River Volga (Moeschler). d, e. South-eastern Russia (Dod.). 



E Mus. Lord Lilford. 

 a. Southern Russia (Parzudaki) . 



E Mus. J. H. Gurney,jun. 

 a. Europe ( Verreaux) . b. River Volga {Moeschler). 



E Mus. Howard, Saunders. 

 a, b. d $ . Volga (Moeschler). 



