234 



ANSERES. 



the posterior marf;;in of the stcrmim, and that is a very shallow one 

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



Skull of Anas hoschas. 



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

 coracoids. 



The Anscres are cosmopolitan, and consist of nearly two hundred 

 species, of which 37 have been recorded from tlie Japanese Empire. 



220. CYGNUS MUSICUS. 



(HOOPER SWAN.) 



Cygnm miisicus, 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 Swinhoc collection procured by Captain Blakiston 

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



