THE LIZARDS OF THE GENUS TROPIDOPHORUS IN SIAM, 
WITH DESCRIPTIONS OF TWO NEW SPECIES. 
By Matcoim A. SMITH, F. Z. Ss. 
Five species of Tropidophorus are ncw known to inh: hit Si: m, 
two of which are here described as new to science. 1. thai was 
obtained by my collectors at the end of 1917 while ona visit to the 
North, while 7. robinsona was discovered in the Peninsula during the 
recent expedition of the Federated Malay States Museums to that part 
of the country. Ihave much pleasure in naming this new species in 
honour of Mr. Herbert C. Robinson, Director of Museums, who as head 
of the party, took charge of my collector. The types of both epecies 
will be presented to the British Museum of Natural History. 
All the lizards of this Genus appear to have the same love of 
water, and are to be found frequenting mountain streams, living in the 
tangle of undergrowth upon the bank, or hiding beneath the stones that 
form the river bed. They produce their young alive. 
Examples of 7’, cochinchinensis 1 have kept alive, but they were 
not happy in captivity. The change of environment was evidently too 
great. Nocturnal in their habits, they spent the days in hiding 
beneath the earth or stones in their cage, I never saw them take any 
food. 
TROPIDOPHORUS ROBINSON], Sp. NOY. 
Diagnosis. Upper head shields feebly striated, a single fronto- 
~ nasal, 30 to 32 scales round the body, dorsals and laterals keeled, not 
mucronate. Allied to 7, berdmorei Blyth, from Pegu and Tenasserim, 
from which it differs chiefly in the fewer number of scales round the 
body. 
Description, Upper head shields feebly striated ; a single fronto- 
nasal, nearly as broad posteriorly as long ; praefrontals forming a good 
suture; frontal as long as, ora little longer than, the frontoparietals 
and interparietal together ; parietals forming a suture behind the inter- 
parietal ; four supraoculars, first longest ; six supraciliaries anterior to 
the fourth supraocular, which enters the supraciliary border ; nestril 
pierced in a single nasal ; a single anterior lorea!, succeeded by another 
of about the same size; six supralabials, fourth largest and subcecular ; 
temporals small and scale-like except one, in contact with the 
parietal, which is usually much larger; a single postmental ; 
VOL. IN, NO. III, 1919, 
