ARCTIC JAGER. 473 



with the space before the cheeks blackish-brown ; the lower part of the 

 hind neck and all the upper parts blackish-grey, the primary quills and 

 tail-feathers brownish-black, the shafts of the former white. 



Length to end of tail 2S inches, to end of wings 15 ; extent of wings 

 45 ; wing from flexure 12 ; tail 12; bill along the back 1^, along the 

 edge of lower mandible If ; tarsus lilj ; middle toe Ij^, its claw ^|. 



Adult Female. Plate CCLXVII. Fig. 2. 



The Female resembles the male, but the middle tail-feathers are about 

 three inches shorter. 



