AVES SPHENISCID^E. 



107 



Eudyptes humboldtii, Gray, Gen. B. III. p. 640 (1846); Pelz. Reis. No- 

 vara, p. 142 (1865: Chile); Gray, Hand-List B. III. p. 99, no. 

 10800 (1871). 



Spheniscits demersus, Schl. (nee Linn.) Mus. Pays-Bas Urinat. p. 10 

 (1867); Coues, Proc. Acad. Philad. 1872, p. 209 (part). 



FIG. 63. Fio. 64. 



Spheniscus humboldti. Profile head 

 and neck. natural size. 



Spheniscus humboldti. Head from 

 above. natural size. 



GENERAL DESCRIPTION. 



Size (adult). Total length, about 27 inches. 



Bill : Gape to tip, 3.05 inches. 



Exposed culmen, 2.6 inches. 



Wing, from shoulder 8.4 inches. 



Tail, 1.4 inches. 



Color (adult). General color of the upper parts dusky or black ante- 

 riorly, shading into slate grey, which is brightest on the upper tail coverts. 



The lower parts are white, except for a black band on the chest extend- 

 ing down each side of body to the tail. 



Head : The forehead and middle of the crown as well as the sides of 

 head and face black. This is broken by a white stripe, beginning behind 

 the eye. This stripe does not extend, as in S. demersus forward above the 

 eye to the lores, and is much narrower than the superciliary stripe in that 

 species. 



Neck : Above much like the middle of the crown in color becoming 

 more greyish dusky where it joins the body. The chin and throat are 

 black, and the rest of the neck, including the sides and lower parts, are 

 pure white. 



