ORNITHOLOGICAL EXPLORATIONS 15l 



The measureinents agreed, however, still better with those of Olor 

 coluDibinaus (= anicricanus), aud a careful comparison with specimeus 

 of the latter iu the National Museum renders it absolutely certain that 

 the bird shot on Bering Island belongs to this American species. This 

 is the first record of the Whistling Swan having been obtained in Asia. 



The young American Whistling Swan agrees with 0. ci/gnus in having 

 the bill depressed at base and the processus maxillaris of the nasal bone 

 much oblique, thus being easily distinguished from Olor bewickii. It is, 

 however, mu';h smaller than 0. cygnus^ and the outline of the culmen 

 is different, being slightly concave in the latter, while straight or rather 

 convex in 0. columhianus. 



My specimen is a perfect counterpart of examples from various parts 

 of America in the National Musuem, being only a trifle lighter and 

 with whitish feet. In the latter respect it seems to agree with No. 81230 

 from Alaska, which in all probability had the feet equally light when 

 alive. In all other respects the Bering Island bird matches No. 85579 

 (cfr. description and measurements in my Monograph, torn, cit., p. 212). 

 A comparison of the measurement of the two specimeus will be appended 

 below. 



The following notes on the color of the naked parts were written down 

 immediately after receiving the bird : Iris dark brown. Bill and lores 

 wlutish flesh-color, tinged with reddish in front of the nostrils, with 

 bluish behind those, and with yellowish at the base, and on the naked 

 eye ring; terminal half of the portion between nostrils and tip, includ- 

 ing the nail, as also the borders of the nostrils and tomia, blackish ; 

 naked skin of mental angle flesh-color. Feet white, with a faint bluish 

 tinge, aud with a yellowish wash on the lower part of tarsus in front, 

 and on the sides of the toes ; webs, under surface of feet, and upper 

 portion of tarsus mottled with dark gray; claws horny white, black 

 towards the tip^. 



