PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. VjI 



iug extension : The naked skin between the base of the bill and the eye ; 

 further, a large si)ot S'"'" long, on the culmen adjacent to the frontal 

 feathers, and connected with the black loral space by a small black 

 stripe; besides, the whole skin covering the nasal cavity is black, sur- 

 rounded by the red-bill color; finally, the nail both on the upper and 

 lower mandible with the edges of both jaws. " The legs and webs are 

 not black, but slate-colored, changing into olive" (v. Pelzeln). 



Plumage pure white with a few brownish feathers here and there, the 

 remains of the young plumage. 



For the sake of completeness, I here give the main points of Mr. 

 Hume's description of the coloration of the young. 



( (? and 9 jun. Juhbee stream, on the borders of the Hazara and Ka- 

 undpindes districts, India. — 11th January, 1871. — By Capt. Unwin.) 



"If from each side of the frontal tongue of feathers, about half an 

 inch from its point, a. slightly curving line be drawn to a point on the 

 edge of the upper mandible about a quarter of an inch from the gape, 

 the whole of the space inclosed by such line between it and the eye is 

 perfectly black. At the extreme point of the frontal feathers, again, is 

 a black band about a quarter of an inch wide, which extends right and 

 left over the whole narial space. The nail is black; the rest of the bill 

 was light gray. The legs and feet, I may add, were grayish black. 



"The general color of the lower surface is a dull white; of the upper 

 whitey -brown. The crown and occiput wood-brown; the greater por- 

 tion of the wing, the scapulars, and rump are \vood or sandy brown. 

 There is nowhere any trace of a ' sooty gray.' The brown is essentially 

 a buffy or sandy brown, though here and there, as in the feathers of the 

 base of the neck, a faint grayish shade is intermingled. 



"Both male and female, though diflering somewhat in size, are pre- 

 cisely similar both as regards plumage and coloration of the bill." 



I am aware that of late there have been published two or three papers 

 about the Indian Swans in " Stray Feathers," and in the "Journal of 

 the Asiatic Society of Bengal," but as I have not been able to pro- 

 cure any of them, I cannot say whether they have any influence on the 

 question discussed above. If they really prove that Capt. Unwin's 

 young birds belong to Cygnus gibMs, I would propose that the present 

 species, which certainly at all events is distinct from the Knob-Swan, 

 should be called Cygnus pelzelni. 



Olor Wage. 1832. 



DiAGN. — Predominant color of the adults white ; the young ivith downy 

 or feathered lores, the down on the sides of the hill terminating far back of 

 the 7iostrils, and forming very distinct loral antiw; tertiaries and scapulars 

 normal, not crisp; tail longer than the middle toe with claw, rounded; in- 



