200 MERGANSER. 



is full of feathers on the top, and back part ; colour of that and half 

 the neck, fine glossy greenish black; the rest of the neck and under 

 parts of the body white, in some of a delicate yellowish rose-colour; 

 sides over the thighs transversely undulated with dusky lines; upper 

 part of the back black ; scapulars nearest the body the same, the 

 others white; lower part of the back, rump, and tail, brownish ash- 

 colour, the feathers edged with dusky white towards the rump ; 

 lesser wing coverts white, the others ash, but in the middle white ; 

 the twelve first quills are black, some of the inner ones ash on the 

 inner webs; the secondaries mostly white, and five or six of them 

 fringed with greenish black on the outer margins ; the tail consists 

 of eighteen or twenty ash-coloured feathers, with dusky shafts; legs 

 orange ; the trachea, or windpipe, is enlarged in two places, nearly at 

 equal distances between the glottis and labyrinth, which is a large 

 bony box, from which the bronchiae pass into the lungs. 



DUN DIVER MERGANSER. 



FEMALE. 



Mergus Castor, Ind. Orn. ii. 829. Lin. i. 209. Gm. Lin. i. 545. |3. Fn. Hehet. 



Tern. Man. 577. Id. Ed. 2d. p. 883. 

 Mergus Merganser, fem. Fn. suec. p. 48. Bris. vi. 231. Id. Svo. ii. 428. 



Gnlo, Scop. Ann. ii. No. S8 - 



ciuereo-albus capite castaneo, Kramer, 343. 2. 



cirratus longiroster, Rati, 134. A. 2. Will. 253. t. 64.— the head. 



Merganser cinereus, Bris. vi. 254. 7. t. 25. Id. 8vo. ii. 428. 

 lougirosfrae fem. Gerin. v. t. 509. 



Anas rubricapilla, Brun. No. 93. 



Der Bibertaucher, Becltst. Deuts.W. S. 731. Naturf. xv. 158. 



Seerach rait rothem Kopfe, Frisch, t. 191. 



Le Harle femelle, Buf. viii. 230. PL enl. 953. 



Der Haubentaucher, Schr. d. Berl. Nat. iii. 374. t. 7. f. 5. — the trachea. 



Dun Diver, Sparling-Fowl, Gen. Syn. \\. 420,421. A. Id. Sup. 270. Br. Zool. ii. 



No 2G0. pi. 92. f. 2. Id. 1812. ii. 212. pi. 37. Arct. Zool. ii. No. 465. Albin, ii. 



pi. S7. Will. Engl. 333. pi. 64. Bewick, ii. pi. p. 257. Lew. vi. pi. 232. Don. iii. 



pi. -65. Wale. i. pi. 80. Pult. Dors. p. 19. Orn. Diet. $ Snpp. Nat. Misc. pi. 445. 



THE Dun Diver is less than the Goosander; length twenty-seven 

 inches, breadth thirty-five ; weighing three pounds and a half. The 



