42 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Ser. 



The remarks^ by Messrs. Rothschild and Hartert as to the 

 markings and shape of the eggs of this species apply ad- 

 mirably to the Academy's series of thirty-six eggs. The ex- 

 treme and average measurements of this series are summar- 

 ized as follows: Length 62.1-72.5 mm. (66.3 mm.) ; breadth 

 44-47.6 mm. (45.9 mm.). 



Larus franklini: Franklin^s Gull 



Albemarle, Chatham, and Narborough islands. 



Three specimens of this gull have been taken in the islands ; 

 the first by Messrs. Snodgrass and Heller^ at Mangrove Point, 

 Narborough Island, in March; the second by Mr. Hunter at 

 Sappho Cove, Chatham Island, on February 10, 1906; and 

 the third by Mr. Hunter at Villamil, Albemarle Island, on 

 March 6, 1906. 



Both the Albemarle and the Chatham specimens were in 

 worn plumage. The former was an immature male, infested 

 with mallophaga, and the latter an immature female. Com- 

 pared with the Sooty Gull, they were quite wild, 



Larus fuliginosus: Sooty Gull 



Abingdon, Albemarle, Harrington, Bindloe, Brattle, Cham- 

 pion, Charles, Chatham, Cowley, Grossman, Daphne, Dun- 

 can, Hood, Indefatigable, islet off northeast James, Jervis, 

 Narborough, Seymour, and Tower islands. 



Unlike the Swallow-tailed Gull, the Sooty Gull is not a 

 bird of the sea-cliffs and ocean, but instead is found com- 

 monly about the shores and lagoons of many of the islands. 

 Although taken at Hood Island by other expeditions, we did 

 not meet with it there during any of our three visits. At 

 Barrington, Brattle, Cowley, Grossman, Daphne, Duncan, and 

 Jervis islands it was not common. Evidently birds fly from 

 island to island, as their occurrence at places where they do 

 not seem to be resident would show. On August 13, while 

 we were en route from Cowley Island to Duncan, two or 

 three were seen several miles from land. 



More than once during the breeding season a pair of gulls 

 would swoop several times at a human intruder in an evident 



^Nov. Zool., V. 6, p. 190. 



2Proc. Wash. Acad. Sci., v. 5, 237. 



