— 
BLACK-THROATED DIVER. 
LESSER IMBER. NORTHERN DOUCKER. SPECKLED LOON. 
Colymbus arcticus, LINN ZUS. 
Colymbus—A Diver. Arcticus—Belonging to the Arctic region. 
Tuts beautiful Diver.is common in Norway on the lakes 
on the higher parts of the mountains, and the same remark 
applies to Finland, Sweden, and Lapland. It is noticed 
besides in Holland, Russia, Germany, France, Switzerland, 
and Italy; and belongs also to Asia, being seen in Siberia, 
Kamtschatka, and Japan; and in America occurs from Hud- 
son’s Bay to the United States, but in the latter not so 
commonly as in the more northern districts. 
A specimen of the Black-throated Diver was killed near 
Purfleet, on the Thames, the 21st. of January, and another, 
a male, on Barton Pond, Norfolk, the end of January, 1850; 
one also, an adult male, about the middle of January, 15438, 
on the River Wensum, at Taverham; a pair on one of the 
Broads in the year 1832. In Essex, one at Chesterford, 
the middle of January, 1850. 
In Yorkshire, two were shot off Scarborough by Mr. T. 
Chapman Broune, of Leicester, in the year 1850. In Norfolk, 
it is sometimes met with in winter, but has been very rarely 
procured in summer plumage. In Lincolnshire, a fine specimen 
was obtained at Trillingham Pond, near Lincoln, the 24th. 
of January, 1850. One of these birds was killed near Sitting- 
bourne, Kent, in 1840, of which Mr. Chaffey has written me 
word. One was found dead at Thornham, on the Norfolk 
coast, in October, 1855. In Sussex, an immature specimen 
was obtained at Pevensey, in November, 1850. A male, a 
young bird, was shot in February, 1850, at Blyth, in North- 
