i. 
GOO@SANDER 
M. 
M E REG A NES ER. 
Genus XCVI MER’GA NS ER, 
N° 1. Goofander M. N°'5. Forked M. 
2. Red-breafted M. - 6. Brown M. 
3. Imperial M. 7. Blue M, 
4. Smew M. 
Mergus Merganfer, Ind. Orz. ii, p. 828. 1——Ger. Orn. v. t.508. 
Goofander, Gen. Syz. vi. p. 418. 1.——Lewin’s Br. Birds, vi. p. 30. pl. 231. 
—Nat. Mic. pl. 445- 
Greater Goofander, Linn. Tranf. iv. p. 122. 26. 
UR reafon for mentioning this bird again, is to requeft that na- 
turalifts will be more diligent than ever in regard to fuch birds, 
whofe identity as fpecies may be afcertained by diffection. We have 
in more places than one remarked the uncertainty in refpect to the 
external appearance of birds, till arrived at the adult ftate. The Dun 
Diver, amoneft others, has caufed us to waver greatly ; for naturalifts 
having fet this bird down for certain as a female of the Greater Goof- 
ander, and finding that fome of thefe fuppofed females were endowed 
with the fame conformation of trachea as the male adult, known to be 
fuch, doubt arofe, whether, as there were both fexes under this livery, 
it might not be totally different in fpecies. The faét however feems, 
that both fexes, for the firft feafon at leaft, have the appearance of the 
Dun Diver, which the female retains throughout life, whilft the male 
gradually gains the beautifully white plumage he is known by ; but the 
diftinguifhing character of the windpipe, wherein he entirely differs 
from the otner fex, will be detected at any age whatever *. 
® Scea figure of it in Beek. d. Berl. Nat. Fr.iv.S, 594. tab. 18. f. 3. 
