PALMIPEDES. 377 



are two successive inflations of its trachea, besides the capsule of 

 the bifurcation. 



An. marila,!..; Le Millouinan, Eiil. 1002; Brit. Zool. Q; Wils. 

 VIII, Ixix, 3; Naum. 59, f. 90; the female, Jn. frcenata, ]\Ius. 

 Carls. 38 ; Naum. 59, f. 90, B. (The Scaup Duck). Ash-colourcd, 

 striated with black; head and neck black, changing to green; black 

 rump and tail; the belly and spots on the wing white; the bill lead- 

 coloured; arrive in small flocks in France during the winter from 

 the remote parts of Siberia. Its trachea is very wide at the com- 

 mencement, and then narrow. 



An. nyroca, Gm. ; A. leucopthalmos, Bechst, ; the female, A. 

 africana, Gm.; Le Petit MUlouin, Enl. 1000; Naum. I, c. 39, f. 89. 

 Brown; head and neck red; a white spot on the wing; belly whitish ; 

 a brown collar on the bottom of the male's neck. Breeds in the 

 north of Germany, and is rarely seen in France. Its trachea is very 

 much inflated about the middle. 



An.fuligula, L. ; Le Morillon, Enl. 1001 ; Frisch, 171 ; Naum. 

 I, c. 50, f. 83,84; Wils. VIII, Ixvii, 5; the young, Enl. 1007; 

 An. scandiaca, Frisch, Yl, xxxvi, 1. 2. (The Tufted Duck). Black; 

 the feathers of the occiput lengthened out into a tuft; the belly and 

 a spot on the wing white; bill lead-coloured. Arrives in France 

 every winter pretty regularly, from the North*. 



The Ducks of the second division f, whose thumb is not bordered with 

 a membrane, have a more slender head, narrower feet, longer neck, the 

 bill more equal, and not so thick a body ; they walk better, and feed on 

 aquatic plants and seeds as much as on fish, and other animals. The in- 

 flations of their trachea consist of a bony and cartilaginous substance 

 which is homogeneous. 



RiiYNCHAPsis, Leach. 



The Souchets are very remarkable for a long bill, the upper mandible 

 of which, forming the exact half of a perfect cylinder, is widened at the 

 end. Its lamellae are so long and delicate that ihey resemble hairs. 

 These birds feed on small worms, which they obtain from the mud on t!ie 

 edge of brooks. 



An. cli/peata, L. ; Souchet commun, Enl. 971, 972; Frisch, IGl, 

 1G2, 1G3; Wils, VIII, Ixvii, 7; Naum. 49, f. 70, 71. (The Shove- 

 ler). A beautiful duck, with a green head and neck, white breast, 

 red belly, and brown back ; the wings are variegated with white, ash 

 colour, green, brown, &c. It visits France in the spring, and its 

 flesh is excellent. The lower part of its trachea is but slightly in- 

 flated. It is the Chenerotes of Pliny. 



An. fasciata, Sh., Nat. Misc. pi. 697, is another species found in 



* Add of species foreign to Europe: An. spinosa. Enl. 967, 968; — An. Slelleri, 

 Pall. Spic, VI, pi. v;— ^«. lahradora, Wils. VII, Ixix, G;—An. valisneria,\h. LXX, 



5; An. rubida, lb. LXXI, 5,6, of wliich, on account of its pointed tail, M. Cli. 



Bonap. makes his genus Oxyura. 



t It is to this second division that M. Ch. Bonap. particularly applies the name of 

 Anas. 



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