88 PATAGONIAN EXPEDITIONS I ZOOLOGY. 



% 



with the black of the crown and terminating in a point, there is a black 

 area on the nape, glossed with dark green. This color also extends on 

 the chin and throat. The yellow which forms the two oval areas back of 

 the ears, is separated above by the black crown. Thence as two narrow 

 yellow lines this color reaches down the sides of the neck and unites on 



FIG. 54. 



Aptenodytes patagonica. Head from above. ]/$ natural size. 



the lower throat where it joins the orange yellow patch on the breast. The 

 yellow is everywhere separated from the blue grey of the back and sides 

 of the neck by a narrow black line, which widens on the sides of the breast 

 and terminates at the flippers. 



Back : Blackish. Thickly mottled with small round blue grey spots so 

 that the general effect is bluish grey. This color becomes bluer grey on 

 the region of the rump and upper tail coverts. 



Tail : Of twenty feathers, which are scarcely longer than the longest 

 upper tail-coverts. 



Flippers : Colored above like the back, but below rather greyer white 

 with a large terminal spot or area of dusky black. 



Lower parts : Silky white with an orange area just below the termina- 

 tion of the black of the throat, formed by the confluence of the two orange 

 yellow lines and shading off into the silky white of the lower breast. 



Bill : Interramal space entirely feathered. Upper mandible black. 

 Lower mandible black at the tip becoming flesh color at the base. 



Eyes : Hazel brown. 



Tarsi and feet : Black, the former feathered but not so as to conceal the 

 base of the outer toe. 



Immature birds have the yellow decorations of the sides of the head 

 and throat whitish with a faint yellow tinge. Otherwise they are similar 

 to adults. 



Young attaining first plumage from down. Head and neck of uniform 

 brown down overcast with grey giving a smoky effect. Flippers blue 

 grey showing remnants of long brown or dusky down. This condition 



