ON BIRDS FROM THE NETHERLANDS, 219 
third specimen in our collection of this in our country 
extremely rare bird. 
Uria troille var. ringvia Brünnich. 
A specimen in winter plumage of the ringed variety, a 
female, was shot 10 December 1908 on the sandbank 
„Onrust” near Texel and purchased for our collection. 
Turdus merula L. 
An old male in pure black plumage, but with white 
forehead and crown and with some white feathers at the 
sides of the neck, was caught on Texel 27 November 
1908, and purchased four our collection. 
Corvus cornix L. 
A male, shot 16 February 1909 at Westernieland, Gro- 
ningen, is interesting, as the grey feathers of breast, sides 
of body and hind neck are minutely and obscurely barred 
with somewhat darker grey; the feathers of the back show, 
under certain light, also obscure bars. 
Corvus corax L. 
We received one specimen, a female, shot 11 March 1909 
near den Helder, when the bird was flying over sea. 
Serinus serinus (L.). 
This species was still wanting in our collection of native 
birds. In the last of April 1909 a male was captured near 
Harderwijk, prov. Gelderland, and purchased for our collection. 
Loxia curvirostra L. 
The common crossbill has been observed in large num- 
bers in our country this summer; already in the middle 
of June large flocks have been seen. I received 19 speci- 
mens from Harderwijk and from Texel. 
One male, a young one in the red-yellow, mixed with 
grey plumage, is interesting by the conspicuous white mar- 
Notes from the Leyden Museum, Vol. XXXI. 
