THE LIZARDS OF THE GENUS TROPIDOPHORUS IN SIAM. 225 
Altogether | have 42 specimens, 16 from Khao Pleung and Pan 
Ton Pheung, in the hills to the south of Prae, while the remainder are 
from the hills in the Me Wang district, reaching as far north as Pa 
Meang, near the border of the Southern Shan States. They were all 
taken at between 800 and 2000 feet elevation. 
In all the adults and in nearly all the half grown specimens, the 
scales are entirely smooth. Only in juveniles are they at all strongly 
keeled, and this seems to be a character common to the genus, namely, 
that the young when born are more strongly keeled than their 
parents. 
The number of scales round the middle of the body varies from 
32 to 36; 32 occurring six times, 34 twenty-seven times, and 36 nine 
times in the series. This variation does not appear to depend upon 
locality. 
The praefrontals in this species are said to be in contract, or 
meeting by the inner angles. My specimens shew considerable varia- 
tion in this respect. In the series of 16 from south of Prae, these 
shields are so arranged in 11 examples, while in the other 5, a small 
shield is interposed separating them. In none of the specimens from Me 
Wang are the praefrontals in contact, this intercalated shield being 
present in every instance. There are twol superposed anterior loreal 
scales in every example, succeeded by a single large posterior one ; 
rarely one or two small scales are interposed between this latter 
shield and the praefrontals. Two praeanal shields occur in every 
example. 
TRoPtpOPHORUS BERDMORIL (Blyth). 
To this species I refer 5 examples collected on Doi Nga Chang, 
in the southern part of the Me Wang district, at between 2000 and 
5000 feet. 
It is unfortunate that none of these specimens is adult, the 
largest one having a head and body of 57 mm. (total length, 132, tip 
of tail missing). All the specimens however, have the dorsal and 
1 Anderson’s specimen as figured (Zool. Researches Yunnan, p. 796. 
pl. Ixxvi, fig. 5. 1878). appears to have only asingle anterior loreal. 
- VOL, Tl, NO. IL, 1919. 
