28 MR. C. BODEN KLOSS ON 



from the better-known parts of Siam — the basin of the Menam 

 and its head-waters near Chiengmai and Nan {cf. Bonhote, 

 P. Z. S. 1900, 1901, 1902); and the ornithologist Count Nils 

 Gyldenstolpe, of the Royal Swedish Museum, has lately collected 

 mammals in much the same area and also in the province of 

 Korat (c/. Gyldenstolpe, Arkiv for Zoologi, Stockholm, 1914); 

 but still the remote south-east has remained unvisited, nor can 

 I find that its French possessors have carried out any investiga- 

 tions in the adjacent parts of Cambodia. So to the zoologist 

 the region between Cochin-China and the better -known districts 

 of Siam was largely a no-man's-land. 



The mainland visited requires no description ; it is undulating 

 ■coastal country, covered with forest except round villages, and 

 with mountains in the distance. Lem Ngop * lies on the north 

 shore of Ivoh Chang f Strait, and Ok Yam (oi- Jam) is eastward 

 •of Koh Kut, just within French territory, as the present 

 boundary of Cambodia comes out on the coast half a mile to the 

 west of it (lat. 11° 40' N.). Klong Yai % and Klong Menao are 

 estuaries to the north of Ok Yam. 



Of the islands, Koh Chang is about 15 miles long and 7 wide ; 

 it is very hilly, and its highest peak, one of a number, i-ises to 

 .2446 ft. The strait which separates it from the mainland ■ 

 narrows in part to 3 miles, though, since much of the adjoining 

 province is an alluvial plain, the island was probably at one 

 time more isolated. It is the northernmost of the Chantabun 

 Ai-chipelago. 



The two little islands of Mehsi (935 ft. high) lie close together, 

 two miles off the south-east end of Koh Cbang; they are called 

 on the chart (Admiralty 2721) " He du Pic" and " Le Chameau " 

 respectively. A little farther from the southern shore lie Koh 

 Klun (600 ft.) and Koh Kra (800 ft.). 



Koh Kut, 15 miles S.S.E. of Koh Chang and about 18 miles 

 from the Siamese-Cambodian coast, is the southernmost of the 

 group ; it is some 1 3 miles long and 5 wide, elevated, with a 

 peak of 1171 ft. It is uninhabited, but swarms with ticks, 

 Avhich infest ever}^ animal upon it and made our week's residence 

 there a most uncomfortable experience. 



Between the northern islands and Koh Kut, from east to 

 west, are Koh Mak and Koh Rang (800 ft.), the first the larger, 

 being about 4 miles long, but, except for one small hill, very low. 

 Three miles or so Avest of it is Koh Rang (Koh Loi of the chart), 

 the most seaward of the group, and, like the other smaller 

 islands, a little under two miles long. There are, further, a few 

 little islets which I did not visit. 



Koh Chang and the Mehsi Islands are separated from the 

 mainland by depths of between 3 and 4 fathoms ; Kra, Klum, 

 and Mak rise from 6 to 7 fathoms of water ; Koh Kut stands in 

 9 to 10 fathoms, and Koh Rang is on the 12-fathom contour- 



* Lem=Cape. f Koh = Island. % 1^1011^= River. 



