. A monograph on the anatidae, or duck tribe. is, mediis vix longissimis. Tibia a baso ad apicem angustatum, lateribus serratis, apice unguiculato. Naves subovales,mediocres, versus medium rostri posits. Lingua acuminata, lateribus ordine um>. parte central]duplici ordine setarum reflexarum instructa. Anat. Crar. Trachea uno vel duobus bulbis tubula in maribus instructa. Larynx inferiorbulbo magno, parte membrinaceo, parte ossco. Costa postice longt- tendentes. Ext. Char. Feet with the posterior toes lobated, the middle ones scarcely the feathered. Hill narro
. A monograph on the anatidae, or duck tribe. is, mediis vix longissimis. Tibia a baso ad apicem angustatum, lateribus serratis, apice unguiculato. Naves subovales,mediocres, versus medium rostri posits. Lingua acuminata, lateribus ordine um>. parte central]duplici ordine setarum reflexarum instructa. Anat. Crar. Trachea uno vel duobus bulbis tubula in maribus instructa. Larynx inferiorbulbo magno, parte membrinaceo, parte ossco. Costa postice longt- tendentes. Ext. Char. Feet with the posterior toes lobated, the middle ones scarcely the feathered. Hill narrowed from the base to the point, the apex with a nail. Nostrils oval,moderate, placed towards the middle of the bill. Tongue pointed, the sides armed with one andthe middle with two rows of bristles. Anat. Char. Trachea with one or two bulbs on the tube in the males. The inferiorLarynx with a large bulb, partly osseous, partly membrinaceous. Ribs extending far backwards. Mergus. Ray, Linn. Gmel. Briss. Merganser. Briss. Type. Mergus - ... I ? 77 [MERGANlNjB. Mr. Stephens, in vol. XII. p. 156, of Shaws Zoology, divides this genus, separating from itthe Smew (Mergus albellusj, and placing the other Mergansers under the genus Merganser, depth of the keel to the length of the sternum in this genus is as 1 to 5. Breadth of tinpelvis to its length as 1 to 2L Length of the cranium to its depth as 1 to 3\. Length of thefemur to the length of the tibia as 1 to If. We have spoken hefore of the affinities of this genus under the head of the sub-familyMerginte.
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Keywords: ., bookauthorlearedwa, bookcentury1800, bookdecade1830, bookyear1838
