2 ARKIV FÖR ZOOLOGI. BAND 8. NIO 23. 



of the northern primeval forest belt. Bång Hue Horn is 

 quite surrounded by evergreen forests, but a few miles (1 

 swedish mile = 10 km.) further to the north there are again 

 dry forests, although these are of quite a different type than 

 the dry forests on the Korat plateau. 



The fauna in the northern dry forests is also of a differ- 

 ent character from the fauna in the Eastern parts of the 

 country especially as regards the birds, but the mammals also 

 seem to be different, although the scarce material unfortuna- 

 tely makes it impossible for me to give an exhaustive account 

 of the distribution of mammals in the väst country. 



However, I hope that my records will anyhow be of 

 some interest for the knowledge of the mammalian fauna of 

 Siarn which up to date is very imcompletely known. 



From Bång Hue Horn I made a three weeks trip up to 

 the Meh Lem river, the neighbourhood of which is chiefly 

 overgrown vvith teak-forests. 



On my way back to Bangkok in April I stopped for a 

 fortnight at the great swamps near Tha Law, a small village 

 south of Pitsanulok, the largest town in Central Siarn. 



The end of April and the first week of May were devoted 

 to explorations in the jungles near the Eastern coast of the 

 Gulf of Siarn, and I had my headquarter in Sriracha and 

 Nong Koh. The first-mentioned place is situated at the 

 coast, opposite the great island Koh-Si-Chang, and Nong 

 Koh is a very beautiful place in the middle of the väst 

 jungles which nearly cover the whole province of Chantabon. 

 During my stay at Sriracha I also made a short trip to Koh- 

 Si-Chang before I left for Europé. 



The study of higher animals in Siarn is very difficult 

 because the whole country is almost entirely covered with 

 dense forests, and there is but little open country, besides 

 the great alluvial plain along the middle course of the Menam 

 Chao Phaya river, and it is of course in the real forests that 

 the wild animals have their home. 



In consequence of the tangle of vegetation, which makes 

 seeing almost impossible but for a few metres, it is exceed- 

 ingly difficult to get near enough especially to the larger 

 animals without disturbing them. 



Very surprising is how difficult it is to make out so 

 large an animal as an elephant among the luxurious vege- 



