THE BIRDS OF SOUTH-WEST AND PENINSULAR SIAM. 53 



We have examined three specimens in breeding plumage from 

 Koh Lak dated end of June, and three from Hua Hin, also in June, 

 in Mr. W. J. F. Williamson's collection. Wing 174-180 mm. The 

 black up the bill is a somewhat variable character, and in one bird 

 from Hua Hin is practically absent. 



Sterna minuta Linn. 



Sterna minuta, Limi., Syst. Nat. i, 1776, p. 228 (Europe). 



Sternal sinensis, Hume, Sti-ay Feathers, viii, 1879, p. 160 (Klang). 



Sterna gouldi, Hvime, op. cit. ix, 1880, p. 131. 



Though not actually recorded as yet, the European Little 

 Tern is certain to be found in winter on both coasts of Siam ; we 

 have it from the coast of Selangor. From 8. sinensis, in winter 

 plumage, it can be separated by its dark shafts to the two outer 

 primaries and its smaller size. 



Sterna saundersi Hume. 



Sterna saundersi, Hume, Stray Feathers v, 1877, pp. 324-6 

 (Karachi), 

 This eastern form can be recognized by having the shafts of 

 the three outer primaries dark, and the wing about 170 mm. It is 

 met with iu fair numbers in the Straits of Malacca during the winter 

 months, and" will quite possibly be found on both Siamese coasts, 

 though it has not as yet been recorded from the area. 

 Anous stolidns (Linn.). 



Sterna stolida, Limi., Syst. Nat. i, 1766, p. 227 (American Seas), 

 Anous stolidus, Williamson, Journ. Nat. Hist. Soc. Siam, iii, 1919, 

 p. 88 (Koh Chuan, Inner Gulf of Siam). 



The only Siamese locality for this cosmopolitan tern is the 



above island in the Inner Gulf of Siam, off the S. E. coast, where it 



was found breeding by Williamson in May 1918. It is extremely 



rare in the Straits of Malacca, but we have one specimen from 



Pulau Jarak, off the Bindings, shot by Mr. Seimund on November 



16th, 1919, on which date large numbers were seen. 



I< Gyldenstolpe, Kunprl. Sv. Vet. Akad. Handl. M. Baker, Journ. N. H. Soc. Siam, iii, 1919. 



66, No. 2, 1916. (first part). 



J. Robinson, Jovirn. F. M. S. Mus. vii, 1917. Baker, Journ. N. H. Soc. Siam, iii, 1919. 



K. Kloss, Ibis, 1918. (second part). 



L. Eobinson and Kloss, Journ. N. H. Soc. Siam, M. I. Baker, Journ, N. H. Soc. Siam, iv, 1920. 



iii, 1919. . (third part). 



VOIi. V, NO. 1, 1921. 



