585 



l^§ inch to 2-^q by lf^ inch. In shape they resemble eggs of the Gadwall, but are greyish buff 

 in colour. Dr. E. Key sends us the measurements of eggs in his collection, which average 53-5 

 by 37 - 0, the largest measuring 55 - 25 by 37'5, and the smallest 5T0 by 35-5 millimetres 

 respectively. 



The specimens in spring plumage, figured and described, are in Dresser's collection, and 

 were obtained from the Volga through Mr. Moschler ; and those in winter plumage are specimens 

 kindly lent to us by Mr. J. H. Gurney, jun., by whom they were purchased in the flesh in 

 Cambridge and Leadenhall Markets. 



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



E Mus. H. E. Dresser. 



a, d,J, ? . Volga, April {Moschler) . 



E Mus. J. II. Gurney, jun. 

 a, b, c, d, e. Leadenhall Market. /. Cambridge Market (J. H. G.) . 



E Mus. G. E. Shelley. 

 a, b, c. Fayoom, March 1871. 



E Mus. W. Schluter. 

 a, b. South Russia, May 1870. 



