80 



the brown ch'ess of tlie immature bird to the white and black 

 plumage of the adult, is worthy of observation as marking an 

 afl&nity in colouriag between this species and Neophron 

 percnopterus. 



The irides in tliis Vulture are a light yellow, the cere 

 grey, the adjacent bare skin flesh coloui-, and the legs of a 

 similar tint ; but both these parts are more rosy in adult than 

 in immature birds, and incline rather in the latter to a pinkish 



grey. 



The adult bii-d of this species has been well figured in 

 Jardine and Selby's " Illustrations of Ornithology," second 

 series, pi. 13, and in Gray's " Genera of Bu-ds," pi. 4. A 

 characteristic wood-cut of the immature bird is given in " The 

 Gardens and Menagerie of the Zoological Society Delineated," 

 page 303, and two examples of immature birds in change (one 

 more advanced than the other) are figured in Wolf's "Zoologi- 

 cal Sketches," pi. 38. 



SPECIMENS OF GYPOHIERAX ANGOLENSIS. 



Skeleton Bissao (G) M. Verreaux. 



No. 1. $ adult Western Africa (G) Zoological Society. 



No. 2. 5 immature ... Fernando Po (G) Do. 



No. 3. S immature ... Bissao (G) M. Verreaux. 



No. 4. immature ... Gaboon River (G) M. Du Chaillu. 



