114 ARUIGONI DEGLI ODDI. 



in some parts onthe left wing exist iltirk Spaces adherent 

 to the shaftof onlya feather; scapulars reddish-isabelline 

 with black zig-zags, somc of them pearl-greyish washed 

 by reddish, and on some feathers here and there on the 

 tone of colour fictitiously spotted of brownish, the outer 

 ones of a rather whitish tint ; toes of a little faded orange- 

 yellow. 



This fine and interesting bird was killed by Mr. A. 

 Guillion Mangilli on the lake of Mandracci ( Volle Mille- 

 campi, Ven. Est.) on December the V"* 1896 and I had it 

 in exchange for my collection from the same sportman, to 

 whom I here make my best thanks for bis kindness. 



Common Ducks of a such kabelline form are excee- 

 dingly rare ; I can mention only two killed in the Venetian 

 territory, the above-mentioned and that preserved in Rev* 

 P. Menin's collection at CoUalto of which I have spoken 

 this year (1). 



This variety one can defme as an isabelline female Duck 

 with the wings, tail and upperparts (back, rump and 

 Upper tail-coverts) become of a fine pearl-grey tint, 

 all this superficially speaking. My specimen and that of 

 Rev^ Menin arequite like, because the design is equal and 

 only, on the latter, the colour of the head is darker and 

 something is also difPerent, but nothing of great importance. 

 The wings in both are very alike to those of Garganey, 

 butwe want proofs to believe them hybrids. Then 1 think 

 that in these specimens isabelline and chlorochrostic va- 

 rieties are mixed together, 



N" 328 of my Collection. — Adult female. — Isabelline- 

 albino variety. 



General colour faded reddish with darker spots onneck 

 and head; back buffish with whitish edges ; rump almost 

 normal ; underparts reddish undulated with whitish- 

 reddish ; undcr tail coverts almost white ; wings buffish- 

 white on the coverts, whitish on the quills, speculum 



(1) See my articie : Nota sopra una varietä di colorito osservata in una 

 Anas boscas, Linn. [Atli Soc. Ital. Sc. nal., vol. XXXVII, 1898). 



