262 
Transactions of the Royal Society of South Africa. 
shield, pierced just below the can thus rostralis ; length of head 3f to 4} times 
in length to vent. Diameter of ear-opening equal to or a little less than cleft 
of closed eye (rarely only f ). Limbs short or moderately elongate ; the 
hind limb, pressed against the body, reaches the shoulder, the neck, the ear, 
or the temple ; length of hand greater than depth of head ; fingers more 
slender than in the preceding, third or third and fourth longest ; tibia as 
long as or shorter than the head or the foot ; toes longer and more slender 
than in the preceding, third and fourth equal, or third or fourth slightly 
the longer, fifth extending as far as first or slightly beyond, exceptionally 
not so far. Tail cylindrical, moderately slender, longer (1^ to If) than 
head and body, rarely a little shorter ( ? ) ; sometimes very slender in 9 • 
Measurements : 
Snout to vent 
Head ..... 
Width of head . 
Depth of head 
Diameter of eye-cleft . 
„ etir-opening 
Fore limb .... 
Hand ..... 
Hind limb .... 
Tibia 
Foot 
Tail 
1. ^, Natal. 2. c?, Klukluwe, 
4. ? , Natal. 
1. 
2. 
3. 
4. 
67 
66 
84 
77 
18 
17 
21 
20 
17 
15 
18 
17 
11 
10 
12 
12 
3-5 
3 
4 
4 
3-5 
3 
4 
4 
31 
31 
36 
35 
12 
12 
15 
14 
45 
46 
52 
44 
15 
15 
19 
14 
17 
19 
19 
16 
89 
96 
93 
90 
Zululand. 3. Gazaland, P.E.A. 
Lej)idosis. — Upper parts, as a rule, not so rough as in the preceding ; 
scales strongly keeled and usually shortly mucronate, the larger ones strongly 
mucronate, and arranged in three longitudinal series on each side of the back, 
exceptionally more irregularly distributed ; 73 to 95 scales round the middle 
of the body* ; the largest spinose scales near the ear-opening much shorter 
than the diameter of the latter ; vertebral crest very low on the nape, more 
or less distinct on the back. Upper head-scales unequal, keeled, 2 to 4 on 
the middle of the snout more or less enlarged ; occipital enlarged ; 12 to 16 
scales across the head from one superciliary series to the other; 10 to 13 
upper labials on each side ; 3 or 4 series of scales between the upper labials 
and the nasal. Grular and ventral scales usually keeled and mucronate, 
aven strongly, but sometimes smooth or feebly keeled. Caudal scales 
strongly keeled and mucronate, not forming whorls, equal except at the 
base. Scales on upper surface of tibia subequal in size, rarely unequal. 
* 80 to 86 in the types according to Peters. 
