148 NILS GYLDENSTOLPE, ZOOLOGICAL RESULTS OF THE SWEDISH ZOOLOGICAL EXPEDITIONS TO SIAM. 



The Wiskered Tern is common in the inner parts of the Gulf of Siarn and at the 

 mouth of the Menam Chao Phaya river. 



At Koh Lak a single male specimen was obtained at an estuary on the 17th of 

 December 1914. Along the coast of the Siamese Malaya I ne ver observed it during my 

 excursions. 



325. Sterna seena. Sykes. — The Indian River Tern. 



J 1 Koh Lak ~jv> 1914. L = 380 mm.; W = 260 mm.; T = 178 mm.; C = 37,5 mm. — Irides: 

 blackish brown. Bill: orange yellow with black tip. Legs: brick red. 



A single male specimen of the Indian River Tern was obtained at Koh Lak on the 

 2nd of December 1914. The specimen is in winter plumage and was shot at a small 

 estuary near the coast. 



When going down the Meh Ping river I once observed 3 specimens of a Tern but 

 they were impossible to get into range and therefore I am unable to ascertain what species 

 they belonged to. They, however, looked rather small for being Sterna seena Sykes 

 and probably belonged to another species (Sterna melanogastra Temm.?) 



326. Lams brunneicephalus. Jerd. — The Brown-headed Gull. 



Lams brunneicephalus: Gyldenstolpe I p. 70. 



A fairly common species in the inner Gulf of Siarn during the cold season. 



Fani. Rallidje. 



327. Amaurornis pheenicura chinensis. Bodd. — The Chinese White-breasted 



Water-hen. 



Amaurornis phcenicurus : Gyldenstolpe I p. 68; Gyldenstolpe II; Williamsou I p. 48; Barton p. 108; Gairdner 



p. 152. 

 Amaurornis pheenicura: Robinson & Kloss p. 11; Grant p. 120. 

 Gallinula pheenicura: Gould p. 151. 

 Porzana pheenicura: Schomburgk p. 261. 

 Erythra phanicura: Muller p. 438. 

 Amaurornis phanicura chinensis: Robinson II p. 141; Robinson III p. 725; Gyldenstolpe III p. 235. 



ef Hat Sanuk 25 / 2 1915. L = 311 mm.; W = 164 mm.; T = 79 mm.; C = 38 mm.; Tarsus = 52 

 mm. — Irides: crimson. Bill: greenish yellow. Frontal sbield: plumbeous. Legs: brown. 



The White-breasted Water-hen found in Siarn belongs to the same race which was 

 described by Boddaert from Hongkong. As to the colouration it is rather similar to A. p. 

 pheenicura Först, from Ceylon but is distinguished by its larger size and by having the 

 upper parts of the body more olivaceous. 



I did not find this species very common in the parts of Siarn visited by the Expe- 

 dition, though it occurred in the Northern Provinces as well as in the Siamese Malaya. 



