THE BLACK-TH110ATED DIVER. 
201 
In a lecture on native birds, delivered some years ago by Mr. 
R. Ball, in Dublin, lie stated, that a great northern diver, shot on 
the Irish coast, and in the possession of Sir Philip Crampton, Bart., 
was found, when killed, to have an arrow headed with copper, 
sticking through its neck. He remarked that the bird had pro- 
bably been struck with this arrow by an Esquimaux on the 
Coppermine river, and was indicative of the extensive flight of the 
species. 
The f Penny Magazine 9 for August 1839 (p. 319) contains an 
original and interesting article on the mode of hunting this diver 
in North America. Audubon gives a very full account of the 
bird, in the fourth volume of his ‘ Ornithological Biography/ 
p. 43. 
THE BLACK-THROATED DIVER. 
Lesser Imber (young). 
Colymbus arcticus, Linn. 
Is extremely rare. 
A specimen of this bird, which I recorded in the c Zoological 
Proceedings * for 1837 (p. 54), was obtained with two other 
Colymbi (C. septentrionalis) in Larne Lough at the end of De- 
cember 1831, by Dr. J. D. Marshall, who remarked that they 
were very tame compared with brent geese, cormorants, and other 
sea-fowl. The following notes were made on this bird after its 
being preserved : — Length (total) 25 J inches ; of wing from 
carpus to point of quills, 10k in. ; of bill from rictus to point, 3J 
in. ; of tarsus, 2 Jin. ; of middle toe and nail, 3J in. Sides of 
the neck marked with dark longitudinal striae, which likewise ap- 
pear, but fewer in number, in front of the neck ; throat pure white. 
The only difference between this specimen and descriptions of C. 
arcticus in the first year, is, that the base of its lower mandible 
appears channelled, and might perhaps be called thickened in the 
middle, though most obscurely so. The bill in profile is just that 
