140 



AVIFAUNA 



near Rijpwetering, Zuid-Holland, 1 June 1906, and an adult 

 male shot on Texel, 20 July 1906. 



32. Chen hyperboreus (Pallas). [Sn eeuwgans]. 



This species has been only seen in our country ; till yet 

 no specimen has been shot or captured. 



33. Anser anser (L.). [Grauwe gans]. 



Till a short time since a few pairs of this species were 

 breeding in Friesland, which seems to be at present not more 

 the case. The Museum received two old males, both killed 

 on Texel, 12 March and 2 April 1906. 



34. Anser brachyrhynchus Baillon. [Kleine rietgans]. 



This species is with A. fabalis the most common goose 

 on migration. We received the following specimens: 

 Q, February 1905, Warmond; 



cTc?d\ 13 December 1905, Veeregat, Zeeland, presented 



by Messrs. T. M. Pike and H. Leyborne Popham; 

 <ƒ , 24 January 1906, coast of Groningen ; 

 cf, 20 November 1906, Westernieland, coast of Groningen ; 

 youug Q, 28 November 1906, Texel; in this example the 



lower fore part of the legs had a yellow tinge; 

 9, 10 November 1907, Westernieland, Groningen; also in 



this example the lower fore part of the legs was yellowish ; 

 14 January 1908, Noordwijk, province Zuid-Holland. 



The above mentioned females dated 28 November 1906 

 and 10 November 1907 are true brachyrhynchus, their legs 

 having only an abnormal coloration on the lower parts. 

 They have nothing to do with the so-called Anser car- 

 neirostris Buturlin, which is in my opinion a variation of 

 Anser fabalis] a specimen of this variation has been shot 

 by the late Mr. T. M. Pike in our country, in the province 

 Zeeland, 17 February 1903 (Alphéraky, the Geese of Europe 

 and Asia, 1905, p. 120). 



Notes from the Ley den Museum, Vol. XXX. 



