234 ANSERES. 



the posterior margin of the sternum^ and that is a very shallow one 

 compared with the deep clefts in the sternum of the Gallinae. The 



Skull of Anas boschas. 



episternal processes are small, and do not meet over the feet of the 

 coracoids. 



The Anseres are cosmopolitan, and consist of nearly two hundred 

 species, of which 37 have been recorded from the Japanese Empii-e. 



220. CYGNUS MUSICUS. 

 (HOOPER SWAN.) 

 Ct/gnus nvtusicus, Bechstein, Naturg. Deutschl. iii. p. 830 (1809). 



The Hooper may be recognized by the distribution of the yellow 

 and black on its bill. The yellow at the base of the mandible extends 

 in front of the nostrils, whilst the black only reaches halfway to the 

 gape. 



Figures : Dresser, Birds of Europe, vi. pi, 419. fig. 4 (head) , 

 The Hooper Swan is a common winter visitor to Yezzo. There is 

 an example in the Swinhoe collection procured by Captain Blakiston 

 at Hakodadi (Swinhoe, Ibis, 1875, p. 456), Messrs, Blakiston and 



