BIRDS OF THE BAHAMA ISLANDS. 
209 
LARUS PHILADELPHIA. ( Ord .) 
Bonaparte’s Gull. 
Winter Plumage , Male. — Above, pearly blue ; under parts, 
white ; a spot of black on the side of the base of the skull ; first four 
primaries mostly white, tipped with black, which in turn is tipped 
with white on the third and fourth ; nearly the whole of the outer 
web of the first primary, black ; feet, yellow, tinged with red ; webs, 
vermilion. Immature birds have a band of dark brown on the tail. 
Length 12.50, wing 9.75, tarsus 1.30, bill 1.15. 
I include this species on the authority of Mr. N. B. Moore, who 
says that he closely observed a bird of this species at Long Island, 
October 8. I have never met with it, but there is no reason why it 
should not occasionally visit the Bahamas, as it is common on the 
Florida coast in winter. 
Fig. Aud. Bds. N. A., Vol. VII. pi. 442. 
STERNA ANGLICA. Montagu. 
Gull-billed Tern. 
Adult Male. — Bill, black, short and stout ; cap, black ; above, 
pearl -gray; under parts, white; first two primaries tipped with 
brown ; tail forked ; legs, black ; iris, brown. 
Length 13, wing 11.75, tail '5, tarsus 1.10, bill 1.32. 
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