36 222 



Picoides tridactylus, Lin. 



Distribution that of the foregoing. These two are the only 

 members of the tribe that occur north of Lofoten. The food of 

 this woodpecker, like that of the other species, is partly vegetal in 

 the autumn months, individuals being annually caught near Chri- 

 stiania in snares set for thrushes and other birds feeding on 

 berries. Besides the berries of Sorh. aucuparia, I have taken from 

 their stomachs the following insects and larvae: — 



In the stomach of a male, shot 30th Nov. 1871 (total length 

 248 mm; wing 124, tail 83 mm), small Coleoptera and their, larvae. 



In the stomach of a female, shot 15th Oct. 1871 (total length 

 225 mm; wing 117, tail 80 mm), large numbers of a Hylastes and 

 the larvae of a Dipter (Cecidomyza). 



In the stomach of a female, shot 28th Nov. 1871, the half 

 developed larvae of a Bhagium. 



Jynx torquilla^ Lin. 



On the west coast, where it occurs in limited numbers, this 

 species has of late years been found breeding in several localities, 

 not only in the interior of the country (Laerdal, Voss), but also ^5^ 

 the neighbourhood of Bergen. 



Calculus can orris, Lin. 



Distributed throughout West and East Finmark, but not found 

 on the sterile foreshore and rocky islands 'of the extreme north. 

 In Porsanger, it occurs as far out as Kistrand (70° 21'), and indeed 

 is met with in every woody locality in Norway. 



Exceedingly abundant on Trorasoen and in the valley of the 

 Maalselv in the months of June and July 1872, several individuals 

 having been repeatedly observed in immediate proximity to one 

 another. It was often mobbed by smaller birds, particularly Anthus 

 pratensis and Fringilla linaria. The cause of this singular pheno- 

 menon surely cannot be an instinctive consciousness of the injury 

 and trouble it may occasion t]iem'( FringiUa linaria not even being 

 one of the species known to hatch the eggs of this bird), " nor 

 is it possible, one would think, that the small birds are mistaken 

 in their hostility; possibly, the true explanation is to be found 



