Black-headed-Gull. 



I lab. Saghalin, Hokkaido, Hondo, Kiusiu, Formosa, Corea. 



307. Larus ridibundus sibiricus Buturlin O-yuri-kamome, 



191 1. — Larus ridibimthis sibiricus Buturlin, Mess. Orn. II, p. 



66. (Kolyma Delta and Ussuriland). 

 Hab. Japan. 



308. Larus saundersi (Swinhoe) Zuj^nro-kaniotne. 



187 1. — CJiroicocephalus saundersi Swinhoe, P. Z. S. pp. 273, 



421, pi. XXII (Near Amoy). 

 Saunder's Gull. 

 Hab. Saghalin, Hokkaido, Kiusiu, Formosa, Corea. 



Rissa Stephens (1S26). 



309. Rissa tridactyla pollicaris Stejneger. Mitsuyubi-kamome. 



1884. — Rissa tridactyla pollicaris Stejneger, Baird, Brewer 



and Ridgway Water B. N. A. II, p. 202. 



Rissa trsdactya (nee L.), Uchida. 

 Pacific Kittiwake. 

 Hab. Saghalin, Kurile Isls., Hokkaido, Hondo, Shikoku. 



' Family STERCORARIID^. 

 Catharacta Brunich (1764). 



310. Catharacta matsudairae Takatsukasa O-tdzuku-kamovic. 



1922. — Catharacta luatsudairae Takatsukasa, "Tori," Vol. 



Ill, pp. 105, 107 (Sagami Bay). 

 Catharacta antarctica (nee Lesson), Taka-Tsukasa, " Tori," 



Vol. II, p. I. 

 Hab. Hondo (Uraga and Sagami Bay). 



Coprotheres Reichenbach (1850). 



311. Coprotheres pomarinus (Temminck) Tdzuku-kamomc. 



81 



