BIRDS 



237 



Family LARIDJE. 



Genus Larus Linnsus. 

 Lams LiNN^us, Syst. Nat., ed. x, I, p. 136, 1758. 



Range. — Cosmopolitan. Galapagos Archipelago. 



3. LARUS FULIGINOSUS Gould. 



Larus fuliginosus Govx.v>, Zool. Voy. Beagle, iii. Birds, p. 141, 1841 (Gala- 

 pagos). — RiDGWAY, Proc. U. S. Nat. Mus., xix, 1896, p. 635. — Roths- 

 child AND Hartert, Novit. Zool., VI, p. 189, 1899. 



Range. — Galapagos Archipelago : Chatham, Hood, Charles, 

 Barrington, Indefatigable, James, Albemarle, Narboro, Abingdon, 

 Bindloe and Tower. Common about nearly all the islands except 

 Wenman and Culpepper where it appears to be absent. We have four 

 specimens taken at Tagus Cove, Albemarle, in January. 



They are extremely noisy birds. When one is about to alight to 

 feed, whether alone or with others, it begins to utter harsh, elongated 

 sounds repeated in quick succession and long continued. Often, when 

 uttering the notes, the bird stands with the foreward part of the body 

 depressed. Often also, they utter a sound composed of a monotonous 

 series of closely repeated guttural notes resembling ah ah ah ah ahahdh. 

 There is never any apparent reason why they should utter these sounds. 



4. LARUS FRANKLINII Swainson and Richardson. 



Larus /rani/inu SwAiNSON and Richardson, Faun. Bor. Amer., 11, p. 424, 

 pi. 71, 1831. 



Range. — Interior of western North America, south in winter to 

 South America ; Galapagos (accidental). 



We have one specimen, an immature male, taken at Mangrove Point, 



Narboro, in March. This is the only record of the species from the 



Galapagos, though it is said to be plentiful in winter on the coast of 



Ecuador and Peru. 



Genus Creagrus Bonaparte. 



0'i?ag"r«.s Bonaparte, Naumannia, p. 211, 1854. 



Range. — Galapagos Archipelago, coast of Peru, Malpelo Island. 



5. CREAGRUS FURCATUS (Ndboux). 



Larus fur catus N^boux, Rev. Zool., p. 290, 1840 ; Voy. Venus, Atlas, pi. x, 

 1846 (" Monterey, California " — probably a mistake). 



Creagrus furcatus Salvin, Trans. Zool. Soc, ix, p. 506, 1876 (Galapagos). — 

 RiDGWAY, Proc. U. S. Nat. Mus., xix, p. 638, 1896. 



Xema urcata Rothschild and Hartert, Novit. Zool, vi, p. 190, 1899. 



