386 MR. C. BODEN KLOSS ON 
Lakon Lampang (No 2467) has a white stripe from muzzle to 
occiput and has rather less brown than other, and more adult, 
examples. 
If one may venture an opinion regarding material one has 
not examined, I think that Gyldenstolpe’s animals may only be 
immature individuals of the form represented by my Lat Bua Kao 
specimens ; otherwise we have the discovery of two distinct species 
of Cunnomys occurring together, whereas the other forms at 
present known, which each occupy a separate area, seem to me 
to be only geographical races of minor or badius—both date from 
1842, and I do not know which name is the older. 
We are not yet in a position to safely propose new Siamese 
races of Cannomys, for the type (collected by Finlayson) is 
“immature and much deteriorated ” (Thomas), and apparently lacks 
a skull. Recent workers do not seem to have been cognisant of its 
exact provenance but it came according to its collector's journal,* 
from Bamvasor—a place name unknown in Siam in that form. 
Mr. A. J. Irwin, Adviser to the Royal Siamese Survey Department, 
informs me, however, that this is undoubtedly a corruption of 
Bangplasoi, sometimes called Bamplasoi, a district situated in the 
corner of the Inner Gulf of Siam less than 30 miles east of 
the Chao Phya river mouth.  Finlayson’s specimen may well 
have come thence to Bangkok or Koh Si Chang, places visited by 
him, for “tun” are appreciated as food by the Siamese peasantry, 
and are also kept as pets. Of their habits Mr. Irwin says (in Litt.) 
“There were no bamboos near where I obtained my three speci- 
mens, These animals are very like the English mole in their 
habits and burrow about in open country leaving regular hills, and 
are rather unlike the larger bamboo-rat which I have always found 
at the foot of bamboos where they gnaw away making quite an 
audible sound, even though they may be some feet under ground. 
The country-people say that the “tun” feeds on grass-roots, ete, and 
grubs, There were any amount of them in the district I was in; 
one was caught in camp within five yards of my tent. Village 
* vide Horsefield, loc. eit. supr.  « 
JOURN. NAT. HIST. SOC, STAM, 
