﻿OF THE NETHERLANDS. 



143 



43. Tadorna tadorna (L.). [Bergeend]. 



The Museum received 9 adult males and females from 

 Hoek van Holland, Texel and the coast of Groningen, and 

 a young female shot 8 August 1905 at Leimuiden, Zuid- 

 Holland. 



44. Casarca casarca (L.). [Kasap.ka-eend]. 



The Museum possesses a fine adult male, shot 6 October 

 1869 at Waardenburg, province of Gelderland. The late 

 van Wickevoort Crommelin has mentioned this bird in the 

 » Archives Neerlandaises des sciences exactes et naturelles*', 

 tome IV, 1869, p. 394. I don't believe the bird is escaped 

 from captivity, as wings and feet are in best condition. The 

 bird has been observed moreover in Germany, Sweden, 

 Denmark and England. 



45. Anas boschas L. [Wilde eend). 



We purchased a male, shot 20 x^pril 1906 at Aalsmeer, 

 Noord-Holland, in which the chestnut-brown colour of the 

 breast is continued along the sides of the body, while some 

 scapulars are also partly chestnut. The under surface is 

 almost white, the vermiculation nearly invisible. The back 

 is black, vermiculated with brownish and the wingcoverts 

 greyish brown, vermiculated and edged with white. Further 

 we purchased 20 males and females in different stages of 

 plumage. 



Hybrid between Anas boschas L. X Nettion crecca (L.). 



A fine male hybrid between these species I received last 

 year ; it has been killed near EUemeet on Schouwen, province 

 Zeeland, 9 November 1907. 



Crown of head and hindhead dark chestnut-brown with 

 obsolete transverse black streaks, round and behind the eye 

 green, sides of the face and of the neck light brown ; chin 

 light brown with a few black spots, throat and fore neck 

 and the lower neck all around greenish black ; upper sur- 

 face as in crecca but more minutely vermiculated, rump and 



Xotes from the Leyden Museum, "Vol. XXX. 



