APPENDIX 



down, looking as if the legs were raw and inflamed. 

 Later the permanent flesh colour is acquired, with 

 black plantar surfaces. The nails are black at first, 

 and later change to brown. 



When the nestling down is shed, the resulting 

 plumage is that of the adult, except that the throat 

 is white instead of black. The upper part of the 

 head and neck are bluish black, the throat, fore- 

 neck, breast, and abdomen being a pure dazzling 

 metallic white, a sharp line separating the white 

 from the black areas. The flippers are the same 

 bluish " tar " black on the back and white beneath. 



In addition to the distinctive pure white plumage 

 of the throat, the immature bird differs from the 

 adult in one very marked particular, which is that 

 the eyelids are black, as in the chick, and do not 

 acquire the staring whiteness which is so distinctive 

 of the adult Ad^lie penguin, increasing, as it does, 

 the white area of the sclerotic so that the bird has 

 the appearance of being perpetually surprised or 

 very angry. 



The iris is a rich reddish brown in the adults, but 

 variable in the young. 



At Cape Adare the light grey " silvery " coloured 

 chicks mentioned by Dr. Wilson were by no means 

 uncommon; in fact, quite a large proportion of 



121 



