OF BEITISII BIRDS 97 



Four species are not known to breed farther east than longi- 

 tude 10. Two of them are subarctic 



Acredula rosea, 

 Motacilla yarrelli ; 



one is subarctic and subtropic 



Pedrix rufa ; 



and the fourth is subtropic 



Caprimulgus nificollis. 



The breeding range of three subspecies is about the same, 

 of which one is arctic 



Falco gyrfalco (typicus), 



and three are subarctic 



Charadrius hiaticula major, 

 Loxia curvirostra pityopsittaca, 

 Friiigilla linaria rufescens. 



Only one species is exclusively British 

 Tetrao scoticus ; 



but the Wren of St. Kilda and the British Coal Tit claim sub- 

 specific rank 



Troglodytes parvulus hirtensis. 



Parus ater britannicus. 



EAST PAL^AHCTIC SPECIES. 



There are nine accidental visitors to our Islands which may be 

 regarded as East Palaearctic, inasmuch as their breeding ranges 

 extend as far east as the Pacific, but not as far west as the Atlantic. 

 Of these there are six whose breeding range is supposed to be 

 confined to the Eastern Palasarctic Region, from the valley of the 



G 



