270 
Transactions of the Boyal Society of South Africa. 
such as is often met with in A. atra ; these might be confounded with the 
latter species, from which they are distinct, however, in the length of the 
toes." (Methuen and Hewitt, I.e.) 
We have examined these specimens (Grt. Karas Mts.) and a few others 
from the S. African Museum (Yoigtsgrund, S.W. Africa, Namaqualand 
and Naroep, Namaqualand), also two in the Kimberley Museum (found 
between Zwart Modder and Eietfontein), and find they represent an un- 
described form, which Ave regard as a variety of A. anchietae. 
The shape and proportions are the same as in the typical form,* and it 
may suffice to mention that the hind limb reaches the ear or just behind it, 
that the toes are either short or moderately elongate, and that the foot is as 
long as or a little shorter than the tibia. Tail compressed and crested in 
the males, longer (1^ to 1^ times) than head and body ; rounded or nearly 
so in the females. 
Scales on head, body and limbs as in the typical form,t except that the 
vertebral crest, which is slight on the nape, is absent on the back, and 
reappears on the tail, in males at least, where it forms a low serrated ridge ; 
90 to 105 scales round middle of body. Grular and ventral scales smooth or 
feebly keeled, sometimes rather strongly keeled and mucronate on the 
abdomen and on the sides. 14 to 17 scales in a longitudinal series under 
the third toe. 
Dark brown above, with lighter transverse markings on the vertebral 
line, or reddish broAvn, grey or yellow, with dark brown, dark grey, or red 
zigzag transverse bands. A large female from Naroep is bright yellow, 
with small cream-coloured spots and larger orange spots, the head blackish 
with small light spots. Lower parts white, the head with a bluish or 
blackish network ; belly sometimes with bluish vermiculations. 
Particulars of Specimens Examined. 
1. 
2. 
3. 
4. 
5. 
6. 
7. 
8. 
9. 
British Museum : 
Great Karas Mts. ^ 
74 
92 
19 
52 
20 
18 
7 
3-5 
3rd 
Naroep Namaland $ 
93 
122 
22 
65 
23 
22 
4 
4 
3rd 
Namaqualand $ . 
80 
118 
20 
62 
21 
21 
4 
35 
3rd 
Kimberley Museum : 
Zwart Modder-Rietfon- 
tein . . . 
8G 
130 
22 
60 
22 
20 
4-5 
3 5 
3rd 
Ditto J . . . 
87 
100 
22 
56 
21 
21 
5 
4 
3rd 
South African Museum .- 
Voigtsgrund, Nama- 
land ^ . . . 
91 
115 
23 
62 
22 
20 
4-5 
3-5 
3rd 
* Some specimens show a very pronounced depression on the forehead between the 
eyes, but this feature has also been observed in specimens of the typical form by 
Bocage : " Una depression plus marquee entre les orbites." 
t In a male from Yoigtsgrund the occipital scale is entirely absent. 
