142 Journal of the F.M.S. Museums. [Vol. VII, 



(?) Thaumatibis gigantea, Williamson. Journ. Nat. 

 His, Soc. Siam. II. p. 72 (1916^. 



a. 3 ad. Pasir Raja, Pulau Lontar, S. W. Siam. 

 1 oth January, 1917. [No. 3882]. 

 " Ins orange, crown dark indigo, occiput and ring 

 round neck livid whitish blue, feet deep lake, bill horn." 



This bird was one of a pair frequenting an open grassy 

 plain interspersed with bushes near the sea. The}* were not 

 particularly shy and with a little care were easily approached. 

 It is evidently this species and not Thaumatibis gigantea. a 

 much larger bird which was observed by Williamson at 

 Sarahett on the Petchaburi River (loc. cit. supra). 



Total length 802; wing 422; tail 210; tarsus 97: bill 

 from gape 165 mm. measured in the flesh. 



24. Sterna fluviatilis iibetana, Saunders. 



Sterna tibetana, Saunders, V.Z.S. 1876, p. 649 ; Blan- 

 ford, Stray Feath, V, p. 485 (1871: Hume. op. cit. viii, p. 158 

 (1879); Sharpe. Haud-l. Birds, i, p. 135 (1S99). 



Sterna fluviatilis, Saunders, Cat. Birds, Brit. Mus. 

 XXV, p. 60, spm. /. (Selangor) (1896) : Blanford, Faun. Brit. 

 hid. Birds, iv, p. 318 (1898). 



Sterna longipennis, Saunders, Cat. Birds Brit. Mus. 

 XXV, p. 69 (spms. ;/, v. w, from Tonka and Malacca (1896) : 

 Blanford, torn. cit. p. 319 (1898); Robinson, Journ. Fed. Malay 

 States Mus. 11. p. 69 (19071 : id. Haud-l. Birds Malay Pcnin's. 

 p. 3 (1910). 



a ? imm. Pulau Terutau. 29th November, 1912. 



This race of the European tern, 5/. fluviatilis is not 

 uncommon in the Straits of Malacca from the end of July to 

 January but hitherto only immature specimens have been 

 obtained so that the identification must remain somewhat 

 uncertain. The distinctly reddish feet of the considerable 

 number of fresh specimens that I have examined would appear 

 to exclude St. longipennis, Nordm., while the fact that the 

 wing of the majority of Malayan birds exceeds 11 inches (275 

 mm.) tends to show that our birds cannot be referred to the 

 European St. fluviatilis fluvatilis. 



25. Sterna sumatrana, Raffles. 



Sterna sumatrana, Raffles. Trans. Linn. Soc. xiii, p. 

 329 (1822) ; Hume <§■ Davison. St'ray Feath. vi, p. 403 (1878). 



Sterna melanauchen. Saunders, torn. cit. p. 12ft: 

 Robinson, antea, vol. V. pp. iS. 142 (1913-51. 



a, b. 1 , ? ad. Pulau Langkawi. 27th April, 1915. 

 Fairly common in the seas round Pulau Langkawi. 



