352 Mr. J. H. Gurney's Notes on 



MoTACiLLA viRiDis, Gmel. 



The Grey-headed Wagtail arrived in flocks on the Arctic 

 circle on the 5th of June^ and soon became extremely abun- 

 dant. It does not seem to extend its range beyond the limit 

 of forest-growth, and disappeared about lat. 69°. 



MOTACILLA CITREOLA, Pall. 



This beautiful bird was the first of the yellow Wagtails to 

 arrive at our winter-quarters. I secured the first example on 

 the 4th of June, apd afterwards found it very abundant on 

 the tundra as far north as we went. 



MOTACILLA MELANOPE (Pall.). 



One solitary example of the Grey Wagtail fell to my gun 

 on the 6th of June. As this is the first time that this bird 

 has occurred within the Arctic circle, so far as I am aware, 

 it may be looked upon as an accidental occurrence. I may re- 

 mark that my bird, with a tail measuring 3' 75 inches, is inter- 

 mediate in form between the eastern and western varieties, 

 [To be continued.] 



XXIV. — Notes on a ' Catalogue of the Accipitres in the British 

 Museum' by R. Bowdler Sharpe (1874) . By J. H. Gurney. 



[Continued from p. 164.] 



Before referring to the genus Helotarsus, to which I shall 

 next have occasion to advert, I am desirous of briefly no- 

 ticing an additional specimen of Circaetus cinereus which 

 has recently been acquired by the Norwich IMuseum. 



This example, which is from Abyssinia, agrees closely in 

 coloration with that from Nubia described in my last paper 

 {antea, p. 163, no. 18), and, like it, has no white bases to the 

 feathers on the under surface. 



Its principal measurements are : — Wing 22*2 inches, tarsus 

 3 9, middle toe s. u. 2*4, culmen 2*1. 



I have already mentioned that I consider the genus Helo- 

 tarsus to be an abnormal member of the Circaetine group ; 

 and I am desirous of offering a few remarks upon it, as sup- 

 plementary to those contained in IVEr. Sharpens volume. 



