Long. tot. 16½ unc.; alæ, 13½: caudæ, 6; tarsi, 2⅛; rostri 2⅜.
The whole of the plumage deep leaden grey; the upper and under tail coverts being lightest; bill red at the base, black at the tip; feet black.
Habitat, Galapagos Archipelago (October).
This species of gull has many characters in common with the Larus hæmatorhynchus of King, from the continent of S. America; but may at once be distinguished from it by the general extreme duskiness of its plumage, feet, tarsi, and bill; and by the more elongated form of the latter. My specimen was killed at James Island. I observed nothing particular in its habits. It is the only species of gull frequenting this Archipelago.
2. Larus hæmatorhynchus. King.
Larus hæmatorhynchus, King, Zool. Journ. iv. 103.
—— Jard. & Selb. Ill. Orn. p. 106.
This bird was killed at Port St. Julian on the coast of Patagonia. Beak (when fresh killed) of a pale “arterial blood red,” legs “vermilion red.”
3. Larus dominicanus. Licht.
Larus dominicanus, Licht. Cat. 82. sp. 846.