1871.] 249 [Hyatt. 



really the young, is given by Ed., pi. 94. This has nearly a complete 

 head of brown. The stripes that occupy the sides of the head are 

 merely indicated by lighter areas on the cheeks. 



The young of this species in our collection has the typical charac- 

 teristics of S. demersus, and its companion S. magellanicus, has, as 

 previously noted, a complete collar of dark feathers around the neck. 

 The S. magellanicus is much the larger bird. In both, the light bar 

 crosses the bill. 



The young bird is quite dark under the wing and under the tail, 

 while the old bird has only scattered black feathers forming minute 

 spots under the wings, and is entirely white under the tail. 



One fact seems to militate against the supposition that S. demersus is 

 the young of S. magellanicus. The tail feathers of the former in our 

 collection are much longer and stifFer than those of Spheniscus magel- 

 anicus, which hardly differ from the feathers of the back. This is a 

 feature of more or less variability, but it is usually the product of ma- 

 ture growth and creates a doubt which can only be answered by the 

 examination of other specimens of S. magellanicus. 



On the middle and outer toes there are four or five scutella upon 

 each of the first two joints, with hexagonal reticulations upon the 

 joint itself. The inner first joint is wholly scutellate. 



One S. demersus, young, Cape Good Hope, La Fresnaye. One 

 S. magellanicus, U. S. Ex. Exp., Capt. Wilkes, Tierra del Fuego, 

 adult. 



Pygoscelis. 



Pygoseelis papua Wagl. 



Aptenodytes papua Forst, Comment. Soc. Gotting., 1781, vol. 3, p. 

 140, pi. 3. Vieillot, Galerie, pi. 299. Gray, Erebus and Terror, 

 pi. 25. 



Aptenodytes tceniata Peale, U. S. Ex. Exp., Peale Mss. 1848. 



Eudyptes papua Cassin, U. S. Ex. Exp. (from Peale Mss.), 1859, 

 p. 350. 



Pygoscelis Wagleri Sclater, Proc. Zool. Soc, London, 1860, p. 390. 



The maxilla is black down to the lateral channels, and has the 

 tomial parts and mandible, except the tip, yellow. On the under 

 side of the wing the upper edge is dark colored for about one-fourth 

 of its length and the tip is also dark. 



One adult. Coll. La Fresnaye. l 



1 The locality given is " New Guinea," and probably therefore erroneous. 



