PALMIPEDES. 427 



the Common Duck. Its capsule is very large, circular, verti- 

 cally flattened, and all on the left side. 

 Some of them have pointed tails. 



An. acutely L. j LePilet^ Enl. 954j Wils. VIII, Ixviii, 3; Frisch, 

 160 and I685 Naum. 51, f. 74 and 75. (The Pintail.) Ash colour- 

 ed above and on the flanks, finely striped with black; white be- 

 neath; the head tawny, &c. The capsule of the trachea is small. 

 The males of others have some of the feathers of the tail recurved. 

 An. hoschas, L.(l) Enl. 776, 777; Wils. VIII, Ixx, 7; Frisch, 

 158 and 159 (The Mallard), is known by its pale yellow feet, 

 yellow bill, the beautiful changeable green of the head, and 

 rump of the male, &c. In our poultry-yards it varies in colour, 

 like all other domestic animals. The wild breed is common in 

 the marshes; it builds among the reeds, in the hollow trunks of 

 willows, and sometimes upon trees. Its trachea terminates be- 

 low, in a large osseous capsule. 



A singular variety is found in the Hook-billed Duck, the An. 

 adunca, L. 

 Some of them have a crested head, and a bill somewhat more 

 narrow at the end, which, though foreign, are reared in all the avia- 

 ries of Europe. Such are. 



An. sponsa, L.; Enl. 980 and 981; Wils. VIII, Ixxviii, 3 (The 

 Summer Duck): and An. galericulata, L., Enl. 805 and 806; 

 Vieill. Gal. 287 (The Chinese Duck). Some of the wing-fea- 

 thers in the male of this latter species are widened and turned 

 up vertically, in addition to those of the tail. Their capsules 

 are rounded, and of a moderate size. 

 There ai'e other species which to the bill of a Duck add legs, even 

 longer than those of a Goose; they build and perch on trees.(2) 

 Some of this number have but semi-palmated feet. (3) Finally among 

 those which have no peculiar mark is the 



An. strepera, L.; Le Chipeau; Enl. 958; Naum. I, c. 45, f. 65; 

 Wils. VIII, Ixxi, 1. (The Gadwal.) Reticulated and finely 

 striped with black; wings, red with a green spot and a white 

 one. The capsule of the trachea is small. 



An. Penelope, L.; Le Siffleur; Enl. 825; Frisch, 164 and 169; 

 Naum. f. 72 and 73.(4) (The Whistler.) Finely striped with 



(1) Bo<rx:tc, Greek name of the Mallard. 



(2) An. arborea, Enl. 804; autumnalis, 826; viduata, 808. [The .^nas spansu 

 and the ./3. mosdmta likewise build on trees. Am. Ed.] 



(3) An. semipalmata. Lath.; Cuv. Mem. du Mas. 



(4) Penelope, the Greek name of a red headed Duck, either the present spe- 

 cies or the ferina, L. 



