876 COLYMBUS 



alike. In winter the upper parts are dull blackish marked with brownish 

 white ; the chin, throat, and under parts white ; the sides of the lower 

 throat and breast striped with black. 



Hob. The northern portions of Europe, Asia, and America, 

 but not in Iceland, migrating south in winter, in Europe to the 

 Mediterranean, Black Sea, and Caspian, in Asia to Japan, and in 

 America to the Northern United States east of the Rockies. 



In habits the present species closely resembles its allies, and 

 like those its cry is loud and weird. It nests on the margins of 

 lakes or on small islands, its nest being a scanty collection of 

 herbage, and in May deposits 2 eggs., which resemble those of 

 C. septentrionalis, but are darker and larger, measuring 3'22 by 

 210. 



1211. GREAT NORTHERN DIVER. 

 COLYMBUS GLACIALIS. 



Colymbus glacialis, Linn. Syst. Nat. i. p. 221 (1766) ; (Naum.) xii. 

 397, Taf. p. 327 ; Hewitson, ii. p. 449, pi. cxxii. ; Gould, B. of E. v. 

 pi. 393 ; id. B. of Gt. Brit, v. pi. 43 ; Dresser, viii. p. 609, pi. 626 ; 

 Ogilvie Grant, Cat, B. Br. Mus. xxvi. p. 496 ; Saunders, p. 711 ; 

 Lilford, vi. p. 97, pi. 44 ; Colymbus immer, Linn. Syst. Nat. i. 

 p. 222 (1766) ; Kidgway, p. 7 ; C. torquatus, Keyserl. and Bias. 

 Wirbelth. p. 916 (1840). 



Plongeon imbrim, French ; Mergulhao, Portug. ; Patoula, 

 Ahulla, Span.; Strolaga maggiore, Ital.; Eisseetaucher, Imber- 

 gans, German ; Ijsduiker, Dutch ; Himbrimi, Icel. ; Islom, Dan., 

 Norweg., and Swed. ; Morskaya-Gagdra, Russ. 



( ad. (Maine, U.S.) Differs from C. arcticus in being larger, in 

 having the whole head and neck glossed with steel-blue and purple ; 

 the upper parts black, glossed with steel-blue and purple and spotted 

 with black ; on the upper and lower throat a transverse band of white 

 stripes ; under parts white ; the sides of the lower throat and upper 

 breast striped with purplish black ; flanks purplish black spotted with 

 white, and a dark band across the crissum ; bill blackish horn, the tip and 

 edge of mandibles plumbeous ; legs blackish, lighter on the inner side ; 

 iris rich reddish. Culmen 4'4, wing 15 '8, tail 3'2, tarsus 3'6 inch. Sexes 

 alike. In winter the upper parts are dark brown, the feathers margined 

 with ashy grey, and the chin, throat, and under parts white, the longer 

 under tail-coverts and a band across the vent brown. 



Hob. Northern North America, Greenland, Iceland, and the 

 Faeroes, east to Novaya Zemlya ; in winter ranging south to 

 the Mediterranean, the Gulf of Mexico, and California ; of 

 regular occurrence in Scandinavia and Britain. 



