358 MR. C. BODEN KLOSS ON 
adjacent parts of the body with five light and five blackish bands ; 
in cambodiana, including the extreme base and tip of the hairs, 
there are only four of each, and the tail is more like the shoulders 
than the rump which is often suffused with ochraceous. The neck 
stripes are apparently move distin +t than in -on2!or, but less so than 
in belangeri. 
Compared with the latter it is larger and darker, the 
annulations anteriorly being of a deeper buff and not producing 
such an olivaceous effect while the rump isoften more richly 
coloured and the rostrum is longer. 
Measurements and specimens examined. See P.Z.S. 1916, pp. 
36, 68. 
Type. Aged female (skin and skull) No. 1841/C.B. K. 
Collected at Klong Yai, S. E. Siam on 6th January 1915. 
14. Tupaia glis olivacea, subsp. nov. 
Type. Adult male (skin and skull ) No. 2208/C.B.K. Col- 
lected at Pak Bu near Tachin, Central Siam, on 23rd October, 1916. 
Diajnosis. Colour above a grizzle of blackish and buff, pro- 
ducing a speckled olive effect. Neck-stripes and under-parts pale 
olive-buff. Tail above more coarsely annulated than the back, black 
more in excess and buff paler ; below greyer than above, no distinct 
median stripe. Size rather larger than 7’. belunjeri. Mamimme 3 
—3=6. 
Measurements: See table posted. 
Specimens examined,:—Four from the type locality. 
Remarks. Two of the specimens are more buffy below than 
the type and another (2207). 
This is an extremely distinct animal on account of its dark 
greenish colouring. I can only account for it, surrounded as it is 
by very different coloured forms, as the result of complete isolation 
by the Chao Phya and Tachin rivers in a swampy area, where 
differential characters once evolved have become dominant since 
they have not been modified and brought back to the normal 
by contact with animals of which the greater part live under 
more normal conditions. It is probably for some such reason 
JOURN, NAT. HIST, SOC, SIAM, 
