138 



Order ANSERIFOEMES. 



The eggs of the Swans, Geese, and Ducks differ considerably in 

 the texture of their shell and shape. They are invariably plain 

 and free from markings. 



Family ANATIDJE. 



Sub-Family CYGNIN^E. 



The eggs of the Swans are biconical, elliptical, or, less frequently,, 

 oval in form. The shell is firm and strong, granulated, and fairly 

 glossy. The colour is variable. 



Genus CYGNUS, SeeJist. 



Cygnus cygnus (Linn.). 



Cygnus musicus, Thien. Fortpftanz. yes. Vog. tab. Ixxvi. fig. 2 



(1845-54) ; Baedeker, Eier Eur. Vog. tab. 47. fig. 1 (1855-03) ; 



Seebohm fy Harvie-Brown, Ibis, 1876, p. 437 ; Dresser, Birds Eur. 



vi. p. 438 (1880) ; Seebohm, Brit. Birds, iii. p. 480, pi. 57 (1885) ; 



Salvadori, Cat. Birds B. M. xxvii. p. 26 (1895); Seebohm, Eggs of 



Brit. Birds, p. 28, pi. 7. fig. 1 (1896). 

 Cygnus ferus, Heiuitson, Eggs of Brit. Birds, ii. p. 393, pi. cxi. fig. ii 



(1856); Tacz. Faune Orn. Siber. Orient, p. 1115 (1893). 

 Cygnus cygnus, Shaiye, Hand-l i. p. 207 (1899). 



The eggs of the Whooper Swan are of a dull yellowish white or 

 pale creamy-buff colour. They measure from 4-2 to 4'65 in length, 

 and from 2*7 to 2'85 in breadth. 



2, Europe. Seebohm Coll. 



1. Iceland (Hargitt Coll.). Seebohm Coll. 



1. Iceland. Seebohm Coll. 



2. Iceland. Crowley Bequest. 



1. Iceland (W. Proctor). Salvin-Godmau Coll. 



1. Iceland ( W. Proctor). Crowley Bequest. 



2. Petchora Ii., Lat. 67 N., 19th June Seebohm Coll. 



(H. Seebohm 8f J. A. Harvie- 

 Brown). 



1. Petchora R., Lat. 67^ N., 19th June Seebohm Coll. 

 (H. S. 8? J. A. H.-B.). 



1. Petchora R., Lat. 68 N., 30th June Seebohm Coll. 



(//. S. $ J. A. H.-B.). 



2. Petchora R., Lat. 68 N., 30th June Seebohm Coll. 



(H. S. $ J. A. H.-B.). 



1. Petchora R., Lat. 68 N. (H. S. $ Seebohm Coll. 

 J. A. H.-B.}. 



