336 MR. C. BODEN KLOSS ON 
The two places where most specimens were obtained were 
Lat Bua Kao and Koh Lak. The former is in east 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 October. 
Koh Lak, in the Province of Rajaburi ( Ratburi ) 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 continued 
to employ it, though it really applied 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 main- 
land; in all other cases where the word occurs in this paper the 
specimens recorded are insular. I stayed at Koh Lak in Novem- 
ber. 
The divisions of Siam which I have use (Central, Eastern, 
etc.) are as defined in P.Z.S. 1916, p. 64, and Journ. N. H. Soe. 
Siam, I, p. 250 and map, except that - following Dr. Malcolm Smith, 
Jouru. N. H. 8. Siam, Il, p. 49-I have now divided the longer 
continuous 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 River to the Isthmus of Kra - roughly 
speaking, between latitudes 13° and 10°30'N. Western and south- 
western Siam are therefore conterminous with the Burmese pro- 
vince 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. 
[ am indebted to Mr. Oldfield Thomas for the determina- 
tion of the Crocidura and the four species of Microchiroptera 
obtained. 
There are several printer's errors in the account of the 
Mammals obtained on my earlier visit (Proceedings of the Zoological 
Society, 1916, pp. 27-75) which I take this opportunity to correct. 
JOURN, NAT. HIST, SOC, SIAM. 
