I08 PATAGONIAN EXPEDITIONS : ZOOLOGY. 



Back : Dusky grey anteriorly, becoming slate grey which is brightest on 

 the rump and upper tail coverts. 



Wing (flipper) : Upper surface dark bluish grey. Lower surface white 

 with areas of dusky, giving a mottled appearance. 



Lower surface : Generally white. Across the chest is a curved black 

 band which continues down each side of the body to the tail, and being 

 widest on the sides and decreasing till it is narrowest along the thighs. 

 This baud is wider tJiroughout tJian is the similar decoration in S. denier sus. 



Tail : Composed of twenty feathers and colored like the back. 



Immature birds differ from the adults in having the chin, throat and 

 sides of the head grey mixed with some white feathers. The sides and 

 lower parts of the neck are smoky brown. The band across the chest 

 and down the sides is absent. 



Geographical Range. — Western coast of Chili and Peru. 



Humboldt's Penguin was not collected by the several expeditions sent 

 out by Princeton University and the material forming a basis for the 

 description here given is in the British Museum of Natural History. 



"On the 24th of January, 1878, a specimen of Humboldt's Penguin 

 {Sphenisciis Jmmboldti) was purchased from a dealer in Liverpool. The 

 bird was in poor condition when received, and very dirty, but perfectly 

 tame, following one about, and seeming pleased to be taken on the lap 

 and nursed like an infant. At first it required to be fed by hand ; for if 

 its food was placed on the ground the bird took no notice of it, although 

 hungry. After a few days, if living fishes were thrown to it and the bird 

 saw them jumping about on the floor, it began to pick up the fishes and 

 swallow them. From this and from the colour and condition of its plum- 

 age, I have no doubt that the bird had been reared from the nest, and had 

 never previously fed itself 



" It was some days before the penguin ventured into the water; but after 

 the first wash the bird rapidly improved ; the feathers became clean ; its 

 appetite increased ; and it passed much time in the water, evidently gain- 

 ing strength and weight. About this time it frequently uttered its loud 

 braying jackass-like notes, and became fat and in full vigour. Figure i 

 (p. 7) gives a very faithful representation of the bird at this time. About 



