BRUNNICH'S GUILLEMOT. 317 



Feet dusky, tinged with rod, The general colour of the 

 plumage is greyish-black on the upper parts, on the head 

 tinged Avith brown. The sides of the head and neck, its 

 fore part, the breast, abdomen, edges of the wings, and the 

 tips of the secondaries, white ; the sides shaded with greyish- 

 black ; a line of the same behind the eye. 



" Length I85- inches ; extent of wings oO ; wing from 

 flexure 8 ; bill along the ridge l-f^"-" 



Remarks. — The tail-feathers have been said to be 

 twelve ; but in an arctic specimen before me I find thirteen, 

 with a gap left by the wanting one. The white of the lower 

 parts terminates on the throat in an acute angle, whereas in 

 the Common Guillemot it is broadly rounded there. The 

 interdigital membranes are full, the margin of the outer 

 rounded ; Avhereas in the Common Guillemot they are emar- 

 ginate, the outer deeply cut out. 



