154 
FASCICULI MALATENSES 
‘ When first seen, the specimen taken was almost black, with only small 
blotches of green on the body ; there was a distinct division in the coloration 
a little behind the fore limbs, and in front of this the shade was much duller 
than it was on the tail and the hind quarters. When the animal was 
handled, the green blotches began gradually to expand, until, finally, the 
comparative extent of green and black was completely reversed. This is 
remarkable as being exactly the opposite of what takes place when Calotes 
cristatellus is roughly treated.’ 
34. Calotes cristatellus, Kuhl. 
Jalor, Batang Padang 
‘ This lizard is the most common Agamid in South Perak and Selangor, 
and though it is, perhaps, less abundant in the Patani States, it is far from 
being scarce ; I have seen specimens in Patalung. Though essentially a brush- 
wood species, it penetrates into high jungle on Bukit Besar. It is rather less 
active than C. versicolor^ and often sits quite motionless on tree-trunks, with 
its head and forequarters raised from the surface to which it clings. It is 
usually of a bright green colour in life, but if ill-used becomes almost black, 
the green only remaining in the form of small blotches and veinings, which, 
however, re-expand if the animal is killed or narcotized.’ 
35. Calotes versicolor, Daud. 
Jalor and Batang Padang, South Perak. 
‘ Calotes versicolor^ the ‘ chamaeleon ’ of the Europeans of the Malay 
Peninsula, is very abundant in the northern parts of the Patani States, in 
Senggora, on the shores of the Taleh Sap, and also in Upper Perak ; but 
is rare in South Perak. It is an extremely active form, principally found 
in the neighbourhood of human dwellings. Mr. Robinson has watched 
a specimen seated on a tree trunk, up which a stream of leaf-sewing ants 
{Oecophylla smargadind) were making their way to their nest. It devoured 
many as they passed, and there is reason to believe that they form an important 
item in the food of the species. When this, lizard is very much excited and 
in rapid motion, the locomotion becomes, at any rate for short distances, 
bipedal.' I have published an account of the nuptial dance of the Malay 
‘ chamaeleon ’ elsewhere,^ which is of interest as showing that the changes of 
colour which have given the lizard its English name proceed, like those of the 
1. Cf. E. Green, N. Annandale, and W. Saville Kent ; Nature^ 1902, vol. Ixvi, pp. 492, 577, and 630. 
2. Proc. Zool. Soc. r8«^, p. 858. 
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