Larus hemprichi, Bp.
981ter. :- Butler, Deccan, Stray Feathers, Vol. IX, p. 439; Murray's Vertebrate Zoology of Sind, p. 318.
THE SOOTY GULL.
Length, 17.5 to 18.5 ; wing, 13.25 to 13.7 ; tarsus, 2 ; bill at front, 1.8 to 2.
Bill greenish-drab, tipped yellow, with a subterminal black bar ; irides dark brown ; legs and feet greyish-yellow.
In summer, forehead, crown, nape, chin, and throat, chocolate-brown ; neck in front darker, nearly blackish-brown, forming a sort of " bib" on the upper breast, the edges of the brown of the back of the neck margining the broad white demicollar of the same color; upper back, scapulars, lesser, median, and greater-coverts, also the secondaries and tertials, deep chocolate-brown, all the secondaries broadly tipped with white ; primaries dark brown, nearly black, all, except the first three, tipped with white; edge of the wing white ; breast and sides of the breast paler brown than the back ; abdomen, vent, under tail-coverts, flanks, upper tail and thigh-coverts, white.
In winter the forehead and lores are a pale brown, also the crown of the head and cheeks, the feathers here and there margined with greyish-white; breast pale brown, the feathers margined greyish-white ; chin and throat white, the feathers of the, latter tipped with brown, otherwise as in the summer plumage, the color of the mantle and wings being paler.
The Sooty Gull occurs in the Kurrachee Harbour and all along the Coast as far south at least as Bombay, where Mr. Hume observed a specimen.