

MERGANINJE.] 



76 



GENUS I. MERGUS. 



Ext. Char. Pedes digitis posterioribus lobatis, mediis vix longissimis. Tibia plumatae. 

 Rostrum 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 inferior 

 bulbo magno, parte membrinaceo, parte ossco. Costa postice longt- tendentes. 



Ext. Char. Feet with the posterior toes lobated, the middle ones scarcely the longest. 

 Thighs 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 and 

 the middle with two rows of bristles. 



Anat. Char. Trachea with one or two bulbs on the tube in the males. The inferior 

 Larynx with a large bulb, partly osseous, partly membrinaceous. Ribs extending far backwards. 



Mergus. Ray, Linn. Gmel. Briss. 



Merganser. Briss. 



Type. Mergus serrator. 



