88 ON A COLLECTION OF BIRDS FROM N. E. SUMATRA. 



7. Chalcophaps indica(Linn.). Antea, p. 79. 



de Beaufort and de Bussy, p. 239. 



1 $ , Toentoengan, Deli, X. E. Sumatra, 20th Xovember, 

 1918 [Xo. 1195]. 



Wing, $ , 115 mm. 



RALLIDAE. 



8. Limnobaenus paykulli(Ljung). 



Sharpe, Cat. Birds Brit. Mus. XXIII, p. 149 (1894). 



1 S , Medan, Deli, X. E. Sumatra, 7th January, 1918 [Xo. 

 1126]. 



Wing, $ , 125 mm. 



This rail, rare everywhere, does not appear to have been 

 hitherto collected in Sumatra. The F. M. S. Museums possesses 

 specimens from near Taiping and Kuala Lumpur, obtained by 

 Mr. E. Seimund in the months of March and December. 



LARIDAE. 



9. Hydrochelidon Ieucoptera(Meisn. and Schinz). 



de Beaufort and de Bussy, p. 241. 



1 $ , Pantai Tjermin, Serdang, X. E. Sumatra, 5th De- 



cember, 1918 [Xo. 1264].' 



Wing, $ , 211 mm. 



We are a little doubtful about this identification, the bird 

 being in winter plumage : the tail is grey with the feathers of 

 the rump of the same colour in the middle: we do not, how- 

 ever, think that it is to be referred to H. hybrida. 



10. Sterna saundersi, Hume. 



Kobinson and Kloss, p. 265. 



2 S , 2 $ , Pantai Tjermin, Serdang, X. E. Sumatra. 5th- 



6th December, 1918 [Xos. 1266-9]. 

 Wing, S , 175, 168 (worn) ; $ , 171, 173 mm. 

 We have named these as above on account of the black 

 shafts to the outer primaries. 



11. Sterna sinensis, Gm. 



Robinson and Kloss, p. 265. 



1 $ , Pantai Tjermin, Serdang, X. E. Sumatra, 5th De- 

 cember, 1918 [Xo. 1265]. 



Wing, $ , 166 mm. 



This has clear white shafts to the outer primaries, the 

 black on their inner webs narrower and the grey colour above 

 paler and is therefore presumably S. sinensis. Both forms 

 and possibly S. minuta are found in Malayan waters but only 

 S. sinensis seems to be a breeding bird with us. 



. Jour. Straits Branch 



