NATATORES: PROCELLARID^E. 277 



The Sooty Albatross*, D. fidiginosa, Gm., of the Pacific 

 coast of Oregon and California, is thirty-four inches long, 

 and the wing twenty-one inches ; color sooty brown. 



The Genus Procellaria Fulmar Petrels has the bill 

 rather stout, and the lower mandible with a lateral groove. 



The Gigantic Fulmar, P. gigantea, Gm., of the Pacific, 

 is thirty-six inches long, and the wing twenty inches. 



The Fulmar Petrel, P. glacialis, Linn., of the North 

 Atlantic, is twenty inches long, and the wing thirteen 

 inches ; the back and wings bluish, under parts white. 



The Pacific Fulmar, P. pacifica, Aud., of the Pacific, 

 closely resembles the preceding one. 



The Slender-billed Fulmar, P. tenuirostris, Aud., of the 

 Pacific, is eighteen and a half inches long, and the wing 

 thirteen inches. 



The Tropical Fulmar, P. meridionalis, Lawr., of the At- 

 lantic, is sixteen inches long, and the wing twelve inches. 



The Genus Daption is represented by the Cape Pigeon, 

 D. capensis, Steph., of the coast of California, which is 

 fifteen inches long. 



The Genus Thalassidroma Stormy Petrels has the 

 bill short and slender. It comprises the smallest of web- 

 footed birds ; but they are able to contend with the most 

 terrific storms. While flying close to the water, they 

 project their feet, and thus give the appearance of walk- 

 ing upon its surface. 



The Fork-tailed Petrel, T.furcata, Gould, of the Pacific, 

 is eight inches long, and the wing six inches. Hornby's 

 Petrel, T. Hornbyi, Gray, of the Pacific, is eight and a 

 quarter inches long. Leach's Petrel, T. Leachii, Temm., 

 of the North Atlantic, is eight inches long, and the wing 

 six and a Jialf inches ; color sooty brown ; rump white. 

 The Black Stormy Petrel, T. melania, Bonap., of the 

 coast of California, much resembles T. Leachii. Wilson's 

 Stormy Petrel, T. Wilsoni, Bonap., of the Atlantic, is 



