226 DR. MALCOLM SMITH ON 
lateral scales strongly keeled, the smallest (head and body, 41 mm.), } 
having the ventrals faintly keeled also. 
There are 36 scales round the middle of the body in one 
individual, 38 in the remvining four. There is a single large anterior 
loreal, succeaded by another of about the same size. The praefrontals 
are in contact with each other by their inner angles. 
I separate these five examples from my specimens of 7. yunn- 
anensis on the following points :— 
(1) Larger number of scales round the body ; (2) dorsals and 
laterals strongly keeled ; (3) a single anterior loreal ; (4) praefrontals in 
contact in all examples. 
TROPIDOPHORUS THAI, sp. nov.* 
Description of the type. Upper head shields rugose; a pair of 
frontonasals, each one much longer than broad; a large azygos shield 
separating the praefrontals and posterior part of the frontonasals ; anterior 
portion of the frontal broken into two pieces, the total length of this 
shield being as long as the frontoparietals and interparietal together ; 
four supraoculars, first longest ; five supraciliaries anterior to the 4th 
supraocular which enters th» supraciliary border; frontoparietals 
shorter than interpyrietal, which separates the parietals; nostril 
pierced in a single nasal; two anterior loreals, succeeded by two larger 
ones; six supralabials, 46h largest and subocular ; temporals small and 
acale-like, keeled ; postmantal single ; tympinum nearly as large’as the 
eye opaning ; 33 scales round the body, dorsals and laterals strongly 
keelad, scarcely mucronate; laterals smallest, the upper rows directed 
obliquely upwards and backwards; gulars feebly keeled, ventrals 
smooth ; a pric of large prasanals ; the adpressed limbs fail to meet by 
the length of the hand ; subdigital lamellae smooth, 18 or 19 beneath 
the 4th tos; tail a little lounger than the head and body, all its scales 
keeled except the median lower series. 
Light brown on the back, with a series of oblique yellowish 
re V- ie pane small light spots on the sides; belly 
1 The tails of these lizards are so fhin adil mutilated aa regrown, that 
the measurements of total length give no true indication of the size of the 
creature. 
*Thai= Siamese, pronounced Tai. 
JOURN, NAT, HIST, SOC, SIAM. 
