AMERICAN ORNITHOLOGY. 17 



BLACK GUILLEMOT. 



A. O. U. No. 37. ( Cepphus grylle) 



RANGE. 



Coasts of the North Atlantic breeding from Maine north to Greenland 

 and wintering south to the coast of Massachusetts and casually farther. 



DESCRIPTION. 



Length 12 to 14 in. Eye brown; bill black; feet, mouth and tongue 

 fiery red. Plumage an intense sooty black with a greenish lustre. 

 Wing coverts white, forming a large white patch called a "mirror"; in 

 this species the bases of the greater coverts are black, in some birds 

 this color showing through the mirror and partly dividing it with a 

 black line. Adults in winter and young, — Above gray marbled with 

 white; below white mottled with gray. 



MANDT GUILLEMOT, 



A. O. U. No. 28. (Cepphus mandtii) 



RANGE AND DESCRIPTION. 



This species has a more northerly distribution than the Black 

 Guillemot breeding in the Arctic regions and south to Labrador and 

 Hudson Bay. It is like the preceding in all respects except that the 

 greater coverts are white. 



PIGEON GUILLEMOT. 



A. O. U. No. 39. (Cepphus columba) 



RANGE AND DECRIPTION. 



This Pacific coast species is found from southern California north to 

 the Bering Strait, breeding throughout its range and also wintering in 

 the same places except in the extreme north. In appearance it is like the 

 Black Guillemot except that the under surfaces of the wings are sooty 

 gray instead of white as in the two preceding species. 



