138 



Order ANSERIFORMES. 



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 ANATID.E. 



Sub-Family CYGNIN.^. 



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, Beclisl. 



Cygnus cygnus (Linn.). 



Cvgnus musicus, Thien. Fvrtpflanz. tjes. V<it/. tab. Ixxvi. fig. 2 



(1845-54) ; JJaedeker, Met- Eur. foff. tab. 47. fig. 1 (18oo-G3) ; 



Seebohm Sf Hurvie-Bnnun, Ibis, 1876, p. 4.')7 ; Jjresser, Birds Eur. 



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



Salvddori, Cut. Birds B. M. xxvii. p. 'IQ (1895): Seebohm, E(/os of 



Brit. Birds, p. 28, pi. 7. fig. 1 (1890). 

 Cvgnus ferus. Ileioitson, E(/(js of Brit. Birds, ii. p. 393, pi. cxi. fig. ii 



(1856); tacz. Faune dm. Siher. Orimit. p. 1115 (1893). 

 Cygnus cygnus, Shmye, 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-G5 in length, 

 and from '2u to 2"85 in breadth. 



Eurcipe. 



Iceland (Harr/itt Cull.). 



Iceland. 



Iceland. 



Iceland {W. Proctor). 



Iceland ( If. Proctor). 



Petcbora 1!., Lat. 67^° N., 19th June 



(//. Seebohm 4" J- ^- Harvie- 



Brotcii). 

 Petcbora R., Lat. 07^' N., 19tb Jime 



(H. S. S- J. A. I£%B.). 

 Petcbora R., Lat. 68= N., .30tb June 



(//. .S'. ^- J. A. H.-B.). 

 Petcbora R., Lat. 68= N., 30tb June 



[H. S. Sr J. A. H.-B.). 

 Petcbora R., Lat. G8= N. (H. S. Sf 



J. A. H.-B.). 



Seebobm Coll. 

 Seebobni Coll. 

 Seebobm Coll. 

 Crowley Bequest. 

 Salviu-Godmau Coll. 

 Crowley Bequest. 

 Seebobm Coll. 



Seebobm Coll. 

 Seebobm Coll. 

 Seebobm Coll. 

 Seebobm Coll. 



