238 
FAMILY XXXIX.* — ANATINiE. DUCKS. 
Genus Y.f— FULIGULA. SEA-DUCK. 
COMMON AMEEICAN SCAUP DUCK. 
Fuligula Marila. 
PLATE OCCOXOyill. — Male and Female. 
It is extremely curious that none of the authors who have written on the 
ornithology of our country, should have discovered that, independent of the 
subject which forms this article, another species of Scaup Duck also exists, 
and that abundantly too, throughout the United States. 
Alexander Wilson figured a Scaup Duck, but in his description of the 
adult in winter, he says that the “ irides” are “ reddish,” and yet he says that 
the Scaup Duck is well known in England. Until about two years since, I 
thought that I had given the history of the Common Scaup Duck, but find 
now that I have been mistaken, and that all that I have said of “ Fuligula 
Marila, must now be applied to Fuligula mariloides of Vigors. The bird 
which has been described in my Ornithological Biographies, and figured in 
my large plates, being in fact the Fuligula mariloides of Vigors, who de- 
scribed from a specimen procured during Beechey’s voyage. In a note to 
page 31, Doctor Richardson, who found this latter species, speaks of it as 
being smaller, but does not point out any specific differences between the 
two birds; and to William Yarrell, Esq., of London, is now due the 
knowledge of this species, which he has characterized and described in such 
a manner as to render it for ever a good and true species, differing from the 
Fuligula Marila in size, being considerably smaller than the latter, the form 
of its bill, the colouring of the terminal feathers of the head, &c. &c. 
About two years ago, my attention was called to notice the typical Scaup 
Duck, by Mr. John G. Bell, of whom I have already spoken, when I 
* See vol. vi. p. 167. 
} See vol. vi. p. 316. 
t Ibid. p. 198. 
