. A monograph on the anatidae, or duck tribe. -t- GENUS I. CHORISTOPTJS. Ext. Char. Pedes digitis longis, semi-membrinatis, unguibus magnis incurvatis magni. Tibice multum denudatae. Rostrum longum acuminatum com ad oculos ossea tubercula supra nares et ungue, magna. Anat. Ghar. Trachea longa convoluta. 9 [ Choristopus Linn. Choristopus semipahnatus. Affinity. This genus certainly approaches most nearly of any among the Anafuhv to theorder Grallatores. To the genus Plectropterus it is nearly allied in form.

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Keywords: ., bookauthorlearedwa, bookcentury1800, bookdecade1830, bookyear1838