288 M. Menzbier on the Birds of European 



Museum. This form has been found several times in Northern 

 Germany and Central Russia^ but is there very rare and 

 occasional, 



HiEROFALCO ISLANDUS. 



A specimen of the Iceland Jer-Falcon was obtained in 

 April 1863 near Dorpat. 



HiEROFALCO GYRFALCO. 



The Brown Jer-Falcon is common and resident only about 

 the Varanger Fiord^ near the coast of Murman and Lake 

 Enare. More to the south it occasionally breeds iu Lapland, 

 but is only a rare and accidental visitor to the other parts 

 of Russia_, as far to the south-east as the central Governments, 

 though it is said that exceptional cases are found of its breed- 

 ing on the rocks of the Baltic Sea near the coast of Esthonia. 



Since the year 1860 a specimen of this bird has been 

 obtained in the district of Jamburg (in the Government of St. 

 Petersburg), and Mr. Eussov once saw this bird upon the 

 Neva in St. Petersburg. Several times the Brown Jer-Falcon 

 has been foimd in the Baltic provinces and in Poland ; and 

 according to Mr, Djakov it is very possible that the same 

 species was observed during the winter in the Government 

 of Tver. Once or twice this bird has been found during the 

 winter season in the Government of Tula, and once at the 

 end of autumn in the Government of Riazan. 



HiEROFALCO URALENSIS. 



The Ural Jer-Falcon is a veiy interesting intermediate 

 race between the Arctic Jer-Falcon, Brown Jer-Falcon, and 

 Henderson^s Jer-Falcon, The immature examples of this 

 race in their first plumage are intermediate between spe- 

 cimens of a corresponding age of Hierofalco gyrfalco and 

 adult Hierofalco hendersoni ; but the adult is very light, nearly 

 white, and is intermediate between the grey and white 

 arctic race. This form will be more fully described iu 

 Mr. Severtzov's and my monograph of the Jer-Falcons, 



On the distribution of this Falcon in Russia we have the 

 following notes. According to Mr. Meves the Brown Jer- 



