142 Journal of the F.M.S. Museums. Wore val: 
(2) Thaumatibis gigantea, Wulliamson, Journ. Nat. 
IGM, SOG, SH, WU, oe 7A (OO). 
a. 6 ad. Pasir Raja,: Pulau Lontar; S!W. Siam: 
roth January, 1917. [No. 3882]. 
“Tris 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. They 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 PIBETANA, Saunders. 
Sterna tibetana, Saunders, P.Z.S. 1876, p. 649; Blan- 
ford, Stray Feath, V, p. 485 (187): Hume, op. cit. viii, p. 158 
(1879); Sharpe, Hand-l. Birds, 1, p. 135 (1899). 
Sterna fluviatilis, Saunders, Cat. Birds, Brit. Mus. 
XXV, p. 60, spm. f. (Selangor) (1896); Blanford, Faun. Brit. 
Ind. Birds, wv, p. 318 (1898). 
Sterna longipennis, Saunders, Cat. Birds Brit. Mus. 
XXV, p. 69 (spms. wu, v. w, from Tonka and Malacca (1896) ; 
Blanford, tom. cit. p. 319 (1898); Robinson, Journ. Fed. Malay 
States Mus. 11, p. 69 (1907); 1d. Hand-l. Birds Malay Penins. 
p: 3 oro). 
a ¢imm. Pulau Terutau. 29th November, 1912. 
This race of the European tern, St. 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, Tyaus. Linn. Soc. xiii, p. 
329 (1822); Hume & Davison, Stray Feath. vi, p. 403 (1878). 
Sterna melanauchen, Saunders, tom. cit. p. 126; 
Robinson, antea, vol. V, pp. 18, 142 (1913-5). 
a,b. 3, % ad. Pulau Langkawi. 27th April, 1915. 
Fairly common in the seas round Pulau Langkawi. 
