1920.] List of the Birds of Siam. 771 



leucoptera Meisner & Schinz. The Siamese specimens, 

 however, most certiiinlj belong to the Javan race named 

 Sterna grisea by Horsfield. 



Hydroprogne caspia strenua Gould. 



iSijlockelidon strenaas Gould, P. Z. S. Lond. 1846, p. 21 : 

 Port Stephens, New South Wales. 



Some specimens oE the Caspian Tern were recently 

 obtained by Williamson at Tachin, central Siam. The 

 collector records them under the name of Ilijdroprogne caspia 

 Pall., but they most certainly belong to the eastern race 

 named by Gould. 



Gelochelidon nilotica Gm. 



Sterna nilotica Ginelin, Syst. Nat. i. pt. 2, 1789, p. (JOG- 

 England. 



Williamson records a pair of this Tern from Bangplasoi, 

 a coastal village in south-eastern Siam. 



Thalasseus bergii cristata Steph. 



Sterna cristata Stephens, in Shaw's Gen. Zool. xi, 1826, 

 p. 146 : China. 



Specimens of the Large (/rested Tern have been collected 

 at Tanjong Patani and on the islands of Terutau, Koh Phai 

 and Koh iiin, the two latter situated in the Inner Gulf of 

 Siam. 



Sterna hirundo tibetana Saund. 



Sterna tibetana Saunders, P. Z. S. Lond. 1876, p. 649 : 

 Tibet. 



Authentic specimens hitherto only recorded from Pulu 

 Terutau, ott" the western coast of peninsular Siam. 



Sterna fuscata Linn. 



Sterna fuscata Linnreus, Syst. Nat. Ed. xii. 1766, p. 22ii : 

 St. Doujingo. 



A single specimen has been recorded from Siam by Parrot. 

 It is stated to have been obtained at the Petchaburi river in 

 south-western Siam. Eormerly known as Sterna fidiginosa 

 Gm. 



