43^ PATAGONIAN EXPEDITIONS: ZOOLOGY. 



Tarsus, 2.5. 



Color. — General color; brown in varying shades, with conspicuous 

 areas of pure white on the shoulders, wings and abdomen. 



Head : Bright cinnamon. 



Neck : The upper part bright cinnamon like the head, shading into 

 rufous on the lower part and into the breast, banded at the extreme with 

 narrow blackish bars 



Back : Mantle rufous ; this is banded like the neck with narrow black- 

 ish bars. Lower back, rump and upper tail-coverts shining, polished black. 



Tail : Black. 



Wings : Smaller and median upper coverts white ; under wing-coverts 

 white ; greater upper coverts metallic green, with narrow white borders 

 at their ends ; primaries and their coverts black ; secondaries white ; ter- 

 tials and scapulars brownish grey. 



Lower parts : The neck as described ; the breast, sides and flanks 

 chestnut rufous, barred with black, the barring becoming broader on the 

 flanks and .better defined ; abdomen white ; lower tail-coverts cinnamon 

 chestnut, with an admixture of black feathers in some birds. 



Bill: Black. 



Irides : Dark brown. 



Feet : Yellow, with a washing of dusky or blackish on the external 

 surface. 



The female is smaller than the male, but is almost as highly colored. 



Young birds of the year are not unlike adults, but are generally duller 

 in tone and lack the metallic green luster of the wing speculum, present 

 in the adults. 



Geographical Range. — Falkland Islands. 



This form was not obtained by the naturalists of the Princeton Expedi- 

 tions. The series of birds in the British Museum and the type of the 

 species described by Dr. Sclater have formed the basis for the foregoing 

 descriptions. The bird has so far been found only in the Falklands and 

 bears much the same relationship to poliocephala, restricted almost entirely 

 to the Straits and the mainland, that C. magellanica does to C. vwrnata. 



"Two pairs of this Goose were obtained from the Falklands in i860, 

 but they did not breed until 1865. We have unfortunately now lost our 

 whole stock of this bird." 



