78 Mr. C. Boden Kloss on Birds [Ibis, 



Thus the collections made largely illustrate the more 

 or less open country of Siam, and provide in some ways 

 an interesting contrast to the results of my former visit, 

 which were obtained in the forested country of the south- 

 east ('Ibis/ 1915, pp. 718-761). 



The two places where most specimens were obtained, 

 and which recur so often in the body of this paper, I have 

 merely referred to as Lat Bua Kao and Koh Lak. Lat 

 Bua Kao is in eastern Siam, about thirty miles west of 

 Korat and just within the eastern foot of the hills which 

 separate the slightly elevated, shallow basin of eastern 

 Siam from the central Siam plain and ,the Menam river- 

 system. My visit was made in Octobei*. 



Koh Lak, in the State of Pran, south-western Siam, 

 is on the east coast of the Malay Peninsula, a little 

 south of the latitude of Mergui. The town is now called 

 Prachuap Kirikan ; but the other name is so much better 

 known that I have contiilued to employ it, though it really 

 applies to some small limestone islets lying a few hundred 

 yards from the shore. " Koh " means island, but in this 

 instance all my collections were obtained on the mainland : 

 in all other cases where the word occurs in combination 

 the specimens recorded are insular. I stayed at Koh Lak 

 in November. 



The divisions of Siam which I have used (central, 

 eastern, etc.) are as defined in P. Z. S. 1916, p. 64, and 

 ' Journal of the Natural History Society of Siam,-" i. p. 250 

 and map, except that I have now divided the longer con- 

 tinuous strip there called western and peninsular Siam 

 into three areas, and call the middle portion south-western * 

 Siam. The new division lies between the reduced areas of 

 the other two, and stretches from the Petchaburi Biver to 

 the Isthmus of Kra — roughly speaking, between latitudes 

 13° and 10° 30' N. Western and south-western Siam 

 are therefore co-terrainous with the Burmese province of 

 Tenasserim ; while peninsular Siam is restricted to the 

 northern part of the Malay Peninsula below the Isthmus 

 of Kra, and has the Malay States to the south of it. 



