BIRDS FROM SIAM AND THE MALAY PENINSULA HI 



mm. Twelve females from Peninsular Siam, the Mergiii Archipelago, 

 and southeastern Siam: Wing, 222-238 (230); tail, 127-147 (141) mm. 

 A male from Rutland Island, Andamans, collected by Dr. W. L. 

 Abbott, January 16, 1901, is somewhat larger than any specimen of 

 M. a. sylvaticus measured by me: Wing, 252; tail, 158 mm. It may be 

 a stray of AI. aeneus aeneus. 



A female collected by Dr. W. L. Abbott on St. Luke Island, Mergui 

 Archipelago, January 19 (No. 172932) has tliree white tail feathers, 

 one of the central pair and the next feather to it on the left side, and 

 the one next to the other central feather on the right side. Three of 

 the other tail feathers have spots of white or light gray of varying 

 degree at the tip. One of the upper tail coverts has a white tip. 



A female (No. 308043), collected by Dr. Smith at Nakon Sritamarat, 

 September 30, has one of the upper tail coverts pure white. 



Specimens of this species with dark-gray hindnecks and pileums 

 usually have shorter wings and in my opinion are more or less imma- 

 ture. I have rejected them in my averages. 



The range of this form extends from northern India (Nepal and 

 Sikkim) south through Assam and Burma to southern Tenasserim, 

 northern Siam, and Peninsular Siam as far as the Malay States. It is 

 found on most of the islands off the west and east coasts of Peninsular 

 Siam and in the Gulf of Siam. 



Birds of this genus usually occur on islands off the coast, rather 

 than on the mainland far from the sea. I have seen few records for 

 northern Siam. Gyldenstolpe ^ records it from there; Robinson ^ 

 records it from Nam Khum, northeastern Siam; Chasen and Kloss ^ 

 record it from the Raheng District, western Siam; Gyldenstolpe * 

 cites it for Bang Hue Pong and Hat Sanak, southwestern Siam; Kloss ^ 

 lists it from Lat Bua Kao, eastern Siam ; Baker ^ records two males 

 from Krabin, central Siam; Robinson '' from the islands of Koh Kut, 

 Koh Mehsi (East Island), and Koh Klum, southeastern Siam, and 

 from Terutau and Koh Muk, Trang, * as well as from Koh Pennan, off 

 Bandon ^; Robinson and Kloss ^° list specimens from Pulo Mohea 

 (North island), Koh Pipidon, Koh Yam Yai, and Koh Yam Noi, 

 western Peninsular Siam; they had previously given it from Telok Poh 

 and Pulau Panjang, Ghirbi Bay, on the same coast. ^^ 



> Kungl. Svenska Vet.-Akad. Handl., vol. 50, no. 8, p. 66, 1913. 



'Ibis, 1931, p. 324. 



Mourn. Siam See. Nat. Hist. Suppl., vol. 7, p. 1.55, 1928. 



* Kun^l. Svenska Vet.-Akad. Handl., vol. 56, no. 2, p. 155, 1916. 

 'Ibis, 1918, p. 83. 



« Journ. Nat. Hist. Sec. Siam, vol. 4, p. 31, 1920. 

 'Ibis, 1915, p. 723. 



* Journ. Federated Malay States Mus., vol. 7, p. 136, 1917. 

 •Journ. Federated Malay States Mus., vol. 5, p. 141, 1915. 

 '» Journ. Nat. Hist. Soc. Siam, vol. 5, p. 31, 1921. 



" Journ. Nat. Hist. Soc. Siam, vol. 3, p. 90, 1919. 



