116 Journal of the F.M.S. Museums. [Vov. VIII, 
The brief diagnosis by Oberholser (Smithsonian Misc. 
Coll. vol. 60, no. 7, p. 2 (1912)) of his Amaurornis phoentcura 
cleptea, from Nias, agrees perfectly with specimens from West 
Sumatra. The bird is stated to be very much smaller than 
Amaurornis phoenicura phoenicura, but no actual dimensions are 
given. 
20. Gallinula chloropus subsp. orientalis, Horsf. 
Gallinula orientalis, Horsf. Trans. Zool. Soc. xi, p. 195 
(1820) (Java); Raffles, tom. cit. p. 329 (Sumatra); Vorderman, 
Nat. Tijd. Nederl. Ind. xlix, p. 416, no. 458 (1889). . 
Gallinula chloropus, Linn.; Sharpe, Cat. Birds Brit. Mus. 
XXII, pp. 169-173 (1894). 
a-b. 6&6, % ad. Sungei Penoh, Korinchi Valley, 
Sumatra, 2,700 feet. 22nd May, 1914. 
[Nos. 1615-6. ] 
00, 7 8 Ah A = acl, 1 2 ioe Samceyreia Asome, 
Korinchi Lake, Sumatra, 2,450feet. 28-30th 
May, 1914. [Nos. 1731-5, 1753-7, 1782, 
2091-2. | 
“ Adult, iris red, bill yellowish green at tip, basal half and 
shield dull red, tarsi and toes apple green, bluish at joints, a 
garter of orange red above the tibio-tarsal joint. Immature, 
iris greyish brown, bill sage green, browner on culmen and 
shield, tarsi and toes yellowish green, greener at joints.” 
Fairly common in the lower part of the Korinchi Valley 
and along the shores of the lake. 
The Eastern tropical race of the Moorhen, first named by 
Horsfield, is so much and so consistently smaller than the 
European form that it has excellent claims to be regarded as a 
subspecies. Males in the present series average about 153 
mm.and females about 149 in wing measurement, while that 
of a European male is given by Sharpe as 7.3 in. (186 mm.). 
The majority of the specimens have the under tail coverts 
more or less tinged with buffy as in the reputed Madagascar 
form G. pyrrhochroa, Newton, but some have them pure white. 
The form of the frontal shield differs also in the sexes, that of 
the male being broader and more globose in outline and that 
of the female narrower and more parallel-sided, but the differ- 
ences are not constant. 
21. Porphyrio calvus, Vieill. 
Porphyrio indicus, Horsf.; Vorderman, Nat. Tijd. Nederl. 
Ind. xlix, p. 416, p. 460 (1889). 
Porphyrio calvus, Sharpe, Cat. Birds Brit. Mus. Xxill, p. 200 
(£894); Van Oort, Notes Leyden Mus. xxxii, p. 113 (1910). 
a-r. 1068,7 %,16imm. Sandaran Agong, Korinchi 
Lake, Sumatra, 2,450 feet. 28-30th May, 
1914. [Nos. 1736-9, 1761-6, 1785-92. | 
Expedition to Korinchi: 
