220 ON BIRDS FROM THE NETHERLANDS. 
gins to greater and median wingcoverts. The wing in this 
specimen measures 93 mm. We have more such examples 
with white margins to the wingcoverts in the collection, 
among which an example presented by C. L. Brehm in 1848 
s.n. Crucirostra rubrifasciata. Formerly I thought, these 
were hybrids between Lozia curvirostra L. and L. bifasciata 
(Brehm), but now I am with Dr. Hartert, who considers 
them as individual aberrations (Vög. paläarkt. Faun. Heft 
II, 1904, p. 118). 
Leyden Museum, September 1909. 
DESCRIPTION OF PLATE. 
Females of Fuligula fuligula (L.). 
Fig. a, 12 August 1909, Nieuwkoop. Summer plumage, adult 
specimen. 
Fig. b, 26 July 1909, Nieuwkoop. Summer plumage, adult 
specimen. 
Fig. c, 24 August 1909, Nieuwkoop. Summer plumage, adult 
specimen. | 
Fig. d, 24 August 1909, Nieuwkoop. In change, adult 
specimen. 
Fig. e, 10 March 1906, de Kaag. Winter plumage, adult 
specimen. 
Fig f, 14 February 1906, Nieuwkoop. Winter plumage, adult 
specimen. 
Fig. a, 17 March 1909, Nieuwkoop. Winter plumage, adult 
specimen. 
Fig. h, 4 January 1906, Nieuwkoop. Young specimen, in 
winter. 
Notes from the Leyden Museum, Vol. Xx XXI. 
ek | in oe eee 
