Birds. 



1781 



latter bird, which at no great distance from its lower extremity becomes 

 of an uniform size ; and the form of the enlargement itself bears a 

 much closer resemblance, on the side which in the figure is marked A, 

 to that of the canvas-backed duck of America (F. valimeria) than 



to that of our common species, but 

 II is of course much smaller than either ; 



lastly, the emarginations in the sternum 

 of the new bird are, notwithstanding 

 the much smaller size of the whole 

 bone, fully as large as those in the ster- 

 num of the common pochard. 



The female of Paget's pochard has 

 not as yet been recognised ; but it is 

 anticipated that, although strongly re- 

 sembling that of F.ferina, it will be 

 found to possess the white speculum by 

 which the male is distinguished ; and 

 it is hoped that the descriptions here 

 given will lead to the identification of 

 other examples of this interesting spe- 

 cies. 



Having alluded, at the commence- 

 ment of this paper, to the fact that the 

 first specimen of this species which was 

 obtained was considered to be a hy- 

 brid between the common and white- 

 eyed pochards, I may here, without re- 

 ference to the question to what extent 

 intermixture takes place amongst ani- 

 mals in a perfectly wild state, observe, 

 that several of the internal characters, 

 which upon more careful examination 

 have become apparent in the bird un- 

 der consideration, are such as could 

 hardly by any possibility have resulted 

 from a cross between those two species. 

 Mr. Gurney's specimen, which, as 

 far as I am aware, is the only one 

 which has been noticed in a wild state, 



B 



: 



Trachea of Paget's Pochard. 

 V 



2f 



