. The genera of birds : comprising their generic characters, a notice of the habits of the genus, and an extensive list of species referred to their several genera . Kingd. Birds, pi.—Anas melanocorypha Molin. ; Anas melanocephala Gmel. 4. Ray.— Anas Cygnus Linn.; Cygnus Olor Pall.;Cygnus melanorhynchus Meyer; Cygnus xantliorhinus Naum.;Cygnus musicus Bechst. ; Type of Olor Wuyl. (1832). 5. C. minor Pall. Jard. & Selbys 111. Orn. pi. 95. — CygnusBevvickii Yarrett ; Cygnus musicus Fab. ? Cygnus islandicusBrehm ; Cygnus melanorhinus Naum. 6. C. amerieanus Sharpless, Audub. Birds of Amer.
. The genera of birds : comprising their generic characters, a notice of the habits of the genus, and an extensive list of species referred to their several genera . Kingd. Birds, pi.—Anas melanocorypha Molin. ; Anas melanocephala Gmel. 4. Ray.— Anas Cygnus Linn.; Cygnus Olor Pall.;Cygnus melanorhynchus Meyer; Cygnus xantliorhinus Naum.;Cygnus musicus Bechst. ; Type of Olor Wuyl. (1832). 5. C. minor Pall. Jard. & Selbys 111. Orn. pi. 95. — CygnusBevvickii Yarrett ; Cygnus musicus Fab. ? Cygnus islandicusBrehm ; Cygnus melanorhinus Naum. 6. C. amerieanus Sharpless, Audub. Birds of Amer. pi. 406.— Cygnus Bewickii Sw. Faun. Bor. Anier. 465. ; C. musicus 7. C buccinator Rich. Faun. Bor. Amer. 464., Audub. Birds ofAmer. pi. 376. 8. C. coscoroba (Mol.) Molina Chili, p. 213. — Cygnus anatoidesKing ; Anas chionis Illiger. 9. C. atrata (Lath.) Vieill. Gal. des Ois. t. 286. —Anas plutoniaShaw, Nat. Misc. pi. 108.; Anser Novae Hollandia; Bonn. t. 9. ; Type of Chenopis Wagl. (1832). * Linnaeus used this name in his Systema Naturae, of 1735. The genus includes Olor and Chenopis Wagler, Isis (1832). October, HARVARD UNIVERSITYCAMBRIDGE. MA USA Order VIII. ANSERES. Family I. Anatid^:. The fifth Subfamily, ANATINiE, or River Ducks, have the Bill lengthened, more or less broad, depressed towards the tip, which is furnished with ahard nail, and the inner portion of the lateral margins more or less lamellated ; the Tarsi compressed,and generally the length of the inner toe ; the hind Toe lengthened, and slightly bordered with amembranous lobe from the base to the tip. Dendrocygna Swains.* Bill long, higher at the base than broad, with the culmen sloping to the tip, which is armed with astrong broad nail, and the lateral margins straight; the lamella? of the upper mandible advancing belowthe lateral margins, slender, and set widely apart ; the nostrils large, oval, and placed near the baseand culmen. Wings short and rounded, with the sec
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