AVES PHALACROCORACID^. 



523 



Bill : Horn-brown, with yellow and reddish shading ; nasal caruncles 

 markedly developed and reaching back to a line just in front of the eyes ; 

 deep cadmium in color, shading into French blue on the bare skin about 

 the eye. 



Iris : Green in the breeding season ; at other times yellowish brown. 



Fig. 257. 



Detail of foot. Pluilacrocorax albivcnter. P. U. O. C. 791 1. Reduced. 



Feet : Cadmium yellow. 



Fig. 258. Fig. 259. 



P. albiventer. 



P. U. O. C. 8312. Immature male. Profile ^ 

 Reduced. 



"ad. Head and bill from above. 



Immature birds (8312 P. U. O. C, Cape Fairweather, Patagonia, 12 

 February, and 8313 the same day and place) are ashy brown above, with 

 lighter tips to the feathers, especially on the wings and back ; the alar bar 

 shows an indistinct dirty white area along the forearm ; the color, ashy 

 brown, of the sides of the head and face extends well down to below the 

 commissure of the bill, making the white area on the throat narrow, com- 



