THE BIRDS OF SOUTH-WEST AND PENINSULAR SIAM. 15 



Tlie result of our work shows that, .so far as Siain is concern- 

 ed, the Malayan fauna stops short at the Pakchan rivor, whence, at low 

 levels northward, it is purely Indo-Bunnefse. Wliat the fauna is on 

 the high dividinir range between Siam and Tenasseriin, which in 

 places reaches 5,000 feet, we aie unable to say ; but from a distance 

 the range does not look heavily forested. Possibly it may contain 

 forms identical with those of Nwalabo and Muleyit, possibly more 

 southern forms ; but everything is necessarily pure conjecture. 



In Tenasscrim, on the other hand, the Malayan fauna continues 

 almost undiluted as far as Tavoy. Its greater extension oji this side, 

 it is perhaps trite to remark, is evidently connected with the 

 persistence of evergreen forests which, again, is due to the apparently 

 much heavier rainfall on the western than on the Siamese side. 



Other Localities. 



In the various papers on collections made by us in this region, 

 references to which will be found in the bibliography, brief accounts 

 will be found of the various collecting stations, which are not 

 specifically mentioned in the proceding pages. We do not think it 

 necessary to repeat these accounts. 



VOL. V, NO. 1, 1921. 



