DUCK. 281 



trachea descends for nearly two-thirds of its length, when its swells 

 out into a strong bony hollow, about the size of a small walnut, flat 

 on one side ; at the bottom, where the trachea divides, the parts 

 again become bony, but not so much enlarged ; at the under parts 

 of this the two bronchia? take rise. Some diversity is found to take 

 place in birds of various sizes, but not enough to cause any mistake 

 in regard to the Species.* 



A. — One, which appeared to me as a Variety, was sixteen inches 

 long, breadth twenty-seven; weight twenty-one ounces; irides dirty 

 white ; forehead dark brown ; crown black ; under each eye a 

 large white spot ; neck rusty brown ; scapulars and upper tail 

 coverts black ; breast shaded with black ; belly white ; in young 

 birds black. Not uncommon at Hudson's Bay. 



52— HARLEQUIN DUCK. 



THE MALE. 



Anas histrionica, Ind. Orn. ii. 849. Lin. i. 204. Gm. Lin. i. 534. Brun. No. 84, 

 85. Muller, No. 127. Fn. groenl. No. 46. Georgi, 166. Phil. Trans, lsii. 417. 

 Frisch, t. 157. Fn. Amer. p. 16. Am. Orn. viii. 139. pi. 72. f. 4. Shaw's Zoo/. 

 No. 1005. Tern. Man. 573. Id. Ed. 2d. 879. 



Anas torquata ex Insula Terrae novae, Gerin. v. t. 580. 



principalis maculata, Bartr. Trav. 293.f 



— — torquata, Bris. vi. 362. Id. 8vo. ii. 457. 



Brimond, Olaff. Isl. ii. t. 34. 



Die Kragenente, Bechst. Deuts. ii. 672. Id. Ed.ld. iv. 1037. 

 Le Canard a Collier, Buf. ix. 250. PL ml. 798. 

 Stone Duck, Hist. Katnts. p. 160. 

 Painted Duck, Ell. Narr. ii. p. 43. 



•Possibly this may be the bird which Ray calls the Sheldin, of which he says, " If you 

 " steep one of the windpipes of these awhile in warm water, to make it lax, you may observe 

 " the pretty motion to be found in the middle protuberance, and pick out a little philosophy 

 " from it." — Ray's Letters, p. 21. 



f The Various-coloured Duck, his neck and breast as though ornamented with chaim 

 of beads. 



vol. x. O o 



