352 ANATIJD^l. 



being parallel ; the irides yellow ; head, cheeks, and upper 

 part of the neck all round rich Orleans plum colour, hut 

 with more of red than purple ; lower part of the neck, 

 and upper part of the hreast, jet black ; all the back, 

 scapulars, small wing-coverts, and tertials, one uniform 

 tint, produced by fine black transverse lines on a ground 

 colour of greyish-white ; greater wing-coverts black ; wing- 

 primaries brownish-black ; secondaries white, forming the 

 speculum, and tipped with black ; rump and upper tail- 

 coverts nearly black; tail-feathers dark brownish-black; 

 the sides below the wings, and the flanks, covered with 

 fine grey lines, on a ground of white : lower part of the 

 breast and the belly mottled with pale greyish-brown and 

 white ; vent dark grey, almost as black as the under tail- 

 coverts ; feet like the beak, much smaller than these parts 

 in the true Scaup, and darker in colour, being of a more 

 uniform bluish-black. 



In the figures given, great care has been taken to pre- 

 sent the true relative appearance of the two birds. 



I have only seen one example found in England, which 

 was purchased in Leadenhall Market some winters since. 

 The form of the trachea is unknown to me, and not pos- 

 sessing any measurements taken before the bird was pre- 

 served, I refrain from mentioning those which may not 

 exist in a state of nature. 



