126 ARRIGONI DEGLI ODDI. 



ting fact. Now I have fouiid it also in Querquedula crecca 

 and I can say in thc Gadwall, of which I have socn a 

 very fme specimen preserved et Count Ridolfi's of Flo- 

 rcnce. It prescnts a broad collar of aboiit an inch in 

 breadth on the fore part of neck, iikely as anomaly, as in 

 ours pecimens. Itis, if I rightlyremember, a quileordinary 

 adult male in winter-dress, bonght this year in the mar- 

 ket of Florenee and stnffed by Signor Magnelli. I think, as 

 for the rest, that these particular anomalies are simple 

 albino varieties which offer themselves witli a tolerably 

 regulär design. 



Besides in onr region, especially during the spring 

 season, are often killed specimens of wild Dncks with the 

 underparls, and especially those which are in conlinuous 

 contact with the water, more or less washed with a ferru- 

 ginons tint, which sometimes, but mnch less frequently, 

 colours also the npperparts. This tint is generally of no 

 great intensity, but lighl and only diffused on the tip of 

 the feathers ; but sometimes 1 saw and killed also speci- 

 mens intenselycoloured with the ferruginous tint became 

 of a very dark tawny colour, bul they are not quite com- 

 mon. Such birds are more often killed onthefresh waters 

 than in Ihe sali ones and belong to the following species: 



A. boscas, Sp. clypeata, M. penelope, F. ferina^ F. cris- 

 tata (less commonly). 



Ch. streperus (four times observed). 



Q. crecca, Q. circia, D. acuta (commonly). 



F. nyroca (commonly enough). 



F'. marila. C. c/laucion, H. f/lacialis [once observed). 



F. coniuta, F. rußna (not observed). 



I have not contemplated these Varietes in my work. 



