292 BRITISH BIRDS. 
had been described by Hemprich and Ehrenberg as long ago as 1832. 
My friend Mr. Danford afterwards procured a large series ; and every one 
admits it now as a good species. In this series, however, the white on the 
wing varies to such an extent that it seems probable that in Asia Minor 
the two species interbreed. 
Still further to the east, in the Himalayan range, another very nearly 
allied species (Ruticilla hodgsoni) is found, in which the white patch on the 
secondaries is slightly more developed ; but it has the wing more rounded. 
Further investigation may possibly prove that Ehrenberg’s Redstart is 
an intermediate form between this species and the Common Redstart. 
