37 



[anatin e. 



GENUS IX. QUERQUEDULA. 



Ext. Char. Pedes digitis posterioribus non lobatis. Rostrum lateribus parallelibus. 

 Lamella paululum elongatte. Nares rotundatae mediocres. Cauda brevis. Lingua subobtusa, ad 

 apicem appendiculata, una online setarum brevium, ad apicem alicpiando pene obliterate, supra hae 

 seta?, in medio,, lateraliter, septem spinis instructs. 



Anat. Char. Trachea tubula infra glottidem expandente, tunc contractu, rursus expandente, 

 et contractu. Larynx inferior bulbo parvo osseo latere et antice extendente. 



Ext. Char. Feet with the posterior toes moderate, and not lobated. Bill with the sides 

 equal. Lamellce slightly elongated. Nostrils rounded, moderate. Tail short. Tongue rather 

 obtuse, with an appendage at the tip, the sides armed with one rank of short bristles towards the 

 apex very short ; above these bristles, in the middle, on each side, armed with seven spines. 



Ax at. Char. Trachea with the tube below the glottis expanding, then contracted, again 

 expanding, and again contracted above the inferior larynx. The inferior Larynx with a small 

 osseous bulb extending on one side and before. 



Anas. Linn. 



Qlerqledula. Ray, Briss. 



Type. Querquedula crecca. 



Tbc proportions of the skeleton are:— Breadth of the keel to the length of the sternum as 

 1 to -11. Breadth of the pelvis to its length as 1 to 1|. Length of femur to that of the tibia as 

 L§. Height of cranium to its length as 1 to 3. 



Affinity. More closely allied to the genera Mareca and Aia than any other in the sub- 

 ly. 



