734 



BULLETIlSr 50, UNITED STATES NATIONAL MUSEUM. 



variegated with black, the whole of concealed and part of exposed 

 portions of the feathers being of the latter color; legs and feet paler 

 red. 



Young. — Similar to the winter plumage but white wing-patch 

 broken by blackish tips to all the feathers, the secondaries and pri- 

 mary coverts with terminal spots of white, rump and under parts 

 indistinctly barred with dusky, and pileum showing little of con- 

 cealed dusky. 



Downy young. — Plain deep sooty brown, darker on head, paler and 

 more grayish on abdomen. 



Adult maZe.— Wing, 154-174.5 (164.2); tail, 49.5-54 (51.7); ex- 

 posed culmen, 31-34 (3.2.5); tarsus, 30-35 (32.5); middle toe, 36-40 

 (38).'^ 



Adult female. —V^ing, 156-171 (163.5); tail, 47-56 (51.5); exposed 

 culmen, 29-33.5 (31.2); tarsus, 31-31.5 (31.2); middle toe, 36-36.5 

 (36.2).° 



Coasts and islands of northern Atlantic Ocean and eastward to 

 White Sea, northern Russia; breeding from southern Greenland and 

 Ungava to coast of Maine (islands from Mount Desert eastward), 

 islands in Gulf of St. Lawrence (Grand En tr}^ Island), northern Nor- 

 way, Shetland Islands, etc.; southward during migration to Con- 

 necticut (Stony Creek, Dec. 19, 1895), Rhode Island (off Sakonnet, 

 Dec. 30, 1906; off Newport, Nov. 28, 1909), and New Jersey (Egg 

 Harbor and Cape May, dates not recorded; Delaware River, near 

 Chester, Dec, 1898), in western Europe southward to British Islands 

 and northern France. 



[Colymbus] grylle Linn^us, Syst. Nat., ed. iO, i, 1758, 130 (s. Sweden); ed. 12 



i, 1766, 220.— Gmelin, Syst. Nat., i, pt. ii, 1789, 584. 

 Colymbus grylle O'Reilly, Greenland, 1818, 145, pi. 14, fig. 2: 



"■ Two specimens. 



Lof'iility. 



MALE.S. 



One adult male troin Swoden 



One adult male from Newfoundland 



FEM.\LES. 



One adult female from Sweden 



One adult female from Canada (Peace liarbor) 



SEX UNKNOWK. 



One adult from Norway (Bergen) 



Middle 

 top. 



36.5 

 36 



35 



