STERNINJE. sterna. 
233 
the coasts of the mainland, as in the Frith of Forth, and in 
various parts of England, it is very abundant. The eggs, de- 
posited in sandy or rocky places, are like those of the Com- 
mon Tern, an inch and three-quarters in length, and an inch 
and two or three twelfths in breadth. 
Sterna arctica. Teram. Man. d’Ornith. ii. 742. — Sterna arc- 
iica, Arctic Tern, MacGillivray, Brit. Birds, v. 
293. Sterna Macdougalli. Boseate Tern. 
Bill about the same length as the head, slender, orange- 
red at the base, then black ; feet vermilion ; wings about 
three inches shorter than the tail, which is very deeply forked. 
In summer, the upper part of the head and nape bluish-black; 
the upper parts pale bluish-grey ; the tail of a lighter tint, 
but the outer webs of the lateral feathers dusky-grey ; pri- 
mary quills dusky toward the end, the outer three with their 
outer webs and part of the inner hoary black ; the hind-neck 
white, fore-neck, breast, and sides, of a delicate pale roseate 
hue ; lower surface of wings and tail white. 
Male, 14Eb 30, 9^, 1^, 
This beautiful Tern was discovered by Dr Macdougall on 
the Cumbray islands in the Frith of Clyde, and described by 
Montagu, who gave it the specific name of Dougailii. It has 
since been found on various parts of the coast, both in Eng- 
land and Scotland. It is said also to occur on the continent, 
and Mr Audubon found it breeding in abundance on the Flo- 
rida Keys. Its flight is peculiarly light and buoyant, but its 
habits are similar to those of the Common and Arctic Terns. 
The eggs are an inch and nine-twelfths in length, an inch 
and a twelfth in breadth, yellowish-grey or olivaceous, spotted 
with dark-brown. 
Sterna Dougailii, Mont. Ornith. Diet. Sup pi. — Sterna Dou- 
gailii, Temrn. Man. d’Ornith. ii. 738. — Sterna Macdougalli, 
Boseate Tern, MacGillivray’s Bnt. Birds, v. 
294. Sterna nigra. Black-breasted Tern. 
Bill about the same length as the head, rather slender, 
brownish-black; feet reddish-brown; wings two inches longer 
than the tail, which is but slightly forked, or merely emar- 
ginate. In summer, the head, neck, breast, sides, and ab- 
domen, greyish-black ; upper parts dark bluish-grey; shafts 
of quills and tail-feathers white ; outer web of first quill 
greyish-black ; lower wing-coverts bluish grey, lower tail- 
coverts white. In winter, the fore-part of the head, and 
the fore-neck white; the other parts as in summer. Young 
