44 Thayer and Bangs, Birds of Saghalin Island. [j^JJi. 



Peristeridas. 



Turtur orientalis (Lath.). — ^One cf, full grown but still in the im- 

 mature plumage, July 8, 1914. Sakachama. 



Rallidse. 



Rallus aquaticus indicus Blyth. — Two adults, d' and 9 , July 7, 

 1914. Sakachama. 



Colymbidae. 



Podiceps griseigena holboelli Reinhardt. — Three adult females, 

 May 14, June 6 and 14, 1914. Sakachama. 



Gaviidae. 



Gavia stellata (Pontoppidan). — Two specimens. A male and a fe- 

 male adult. Sakachama, June 10. 



Laridse. 



* Hydrochelidon leucoptera grisea (Horsfield). — Two adult females, 

 May 28, 1914. Sakachama. 



Mathews contends that there is an eastern subspecies of the white-winged 

 black tern, worthy of recognition by name. He must have had access to 

 adequate material, so we with much hesitation adopt the name he uses for 

 this form. 



We ourselves can detect no differences whatever between the present two 

 skins and numbers of western specimens with which we have compared 

 them. The two Saghalin skins afford the following measurements: — 



Sterna longipennis Nordm. — Three adults, two males and a female, 

 May 18, June 4 and June 26. Sakachama and Haktshoko. 



Sterna aleutica Baird.— Eleven adults, nine males and two females. 

 All taken June 23, 1914, except one male, collected June 24, 1914. 

 Sakachama. Judged by the dates upon which these specimens were taken 

 they must of course have been breeding. 



*Larus schistisagus Stejneg. — One adult 9, May 11, 1914. Saka- 

 chama. 



*Larus vegae Palmen. — One adult 9, and one immature cf, June 

 2, 1914. Haktshoko. 



* Rissa tridactyla poUicaris Ridg. — Two specimens, d' and 9 , both 

 immature, June 26 and July 3, 1914. Sakachama. 



