BLACK-THROATED DIVER. 
1S5 
p -iii) Mr. Nelson, in his “Natural History Collections of 
Al^ka” writes During a sledge journey along this coast 
wits o tL skin were'seen, usually comprisang the skm of 
the ik and with the beak in front, and thus fastened 
as a fillet about the head, the long white beak projecting fiom 
the wearer’s brow. Fillets made of this bird’s ^ 
manner are commonly used by the natives of the coaA ^ 
named, and about Kotzebue Sound. 1 hey are worn during 
certain religious dances held in winter, and are esteemed high y 
by the natives, from some occult power they are supposed to 
possess.” 
Nest.-The only record of the finding of the nest of the 
White- billed Diver, is that of Palander, during ° 
the “ Vega.” He shot the female from the nest, on the 3rd o 
July, 1879, at Pitlekai, on the Tschuktschi Peninsula. 
Egg. — Like that of Colymbus glacialis. Axis, 37 inches; 
diam. 2 ‘2. 
III. THE BLACK-THROATED DIVER. COLYMBUS ARCTTCUS. 
Colymbus arcticus, Linn. Syst. Nat. i. p. 221 ^acgill. 
Brit. B. V. p. 294 (1852) ; Dresser, B. Eur. viii. P- <5i5.pl- 
627 (1876); B. O. U. List. Brit. B. p. 201 (1883 , 
Saunders, ed. Yarrell’s Brit. B. iv. p. 105 (1884), 
Seebohm, Hist. Brit. B. iii. p. 4°? (1885); Saunders, 
Man. Brit. B. p. 697 (1889). 
Adult Male. — Ceneral colour above glossy black, spangled 
with white sub-terminal bars on the scapulars, very broad and 
distinct ; on each side of the mantle a second longitudinal 
patch of white, formed by broad sub-terminal bars to the 
feathers; remainder of the back, rump, and upper tail-coverts 
black; wing-coverts black, with twin spots of white on the 
' median and greater series; bastard-wmg, primary-coverls, 
quills and tail black ; head and neck dove-grey, slightly more 
slaty-grey on the forehead and region of the eye ; sides ol ace 
and ear-coverts sooty-grey ; throat purple, brighter on t c 
lower throat, the margin of which is abruptly defined on the 
fore-neck. Across the middle of the throat a band of white 
streaks, varied with eight streaks of black ; sides of lower 
