BRITISH BIRDS. 153 



Female : head, throat and upper neck dark brown, with a 

 white collar around lower neck ; crest and white facial 

 patch absent ; back, tail and scapulars dusky-slate ; wing 

 as in male ; under parts chiefly white, with dusky mottlings 

 on upper breast and sides ; bill brownish-black, with an 

 orange spot or bar near the nail. 

 A common winter visitor. 



232. C. albeola (Linn.). BUFFEL-HEADED DUCK. 

 Hab. Northern Nearctic region. 



Has occurred thrice in England and twice in Scotland. 



GENUS CXXV. COSMONETTA, Kaup (1829). 



233. C. histrioniea (Linn.). HARLEQUIN DUCK. 

 Hab. Iceland, Northern Nearctic region and N.E. Asia. 

 A veiy rare straggler. Mr. Whitaker has one obtained 



on the Yorkshire coast (1862), while Mr. R. W. Chase 

 and the Rev. Julian G. Tuck have each an example 

 obtained at the Fame Islands (1886). It also appears to 

 have occurred twice in Scotland, but many years ago. 



GENUS CXXVI. HARELDA, Stephens (1824). 



Bill shorter than head and narrowing towards tip, nail 

 considerably decurved ; laminae partly exposed. Tail of 

 14 feathers, short, except two central ones which are much 

 elongated and tapering. 



234. Harelda glaeialis (Linn.). LONG-TAILED DUCK. 



Hab. Circumpolar region, northward of lat. 60. 



Male : head, throat and neck white ; sides of head 

 grey, followed by an oval patch of blackish-brown on each 

 side of upper neck ; breast, upper parts, wings and long 

 central tail-feathers black ; outer tail-feathers and long 



