South African Agamas cdlifiJ to Agama hisjjula and A. atra. 
1. 
2. 
3. 
4. 
From snout to vent 
, 88 
67 
100 
92 
Head (to occiput) . 
. 23 
16 
24 
22 
Width of head ... 
. 24 
18 
24 
23 
Depth of head .... 
. 16 
12 
16 
15 
Diameter of eye-cleft (eye closed) , 
, 4 
3-5 
5 
5 
ear-opening- . 
. 2-5 
2-5 
2-5 
2-5 
Fore limb .... 
. 47 
33 
44 
42 
Hand ..... 
. IG 
12 
15 
15 
Hind limb .... 
. GO 
43 
59 
56 
Tibia 
. 21 
15 
22 
19 
Foot 
. 24 
17 
22 
20 
Tail 
. 94 
63 
105 
77 
1, c^, Cape of Good Hope (Busk). 2. , Cape of Good Hope (Lea). 
3. 9 , Cape Colony (Haslar Hosp.), 4. 9 > Eerste Eiver (Leighton). 
Lepidosis. —TJp-pev parts very rough, with enlarged spinose scales on 
the posterior part of the head and on the body and limbs, scattered, or 
forming small groups among moderately large, imbricate, strongly keeled 
and sometimes more or less distinctly mucronate scales ; 70 to 85 scales 
round middle of body ; the longest spinose scales near the eai'- opening as 
long as or a little longer than the diameter of the latter ; a vertebral series 
of more or less distinctly enlarged scales, often forming a low but very 
distinct nuchal and dorsal crest, which may l)e interrupted on the back. 
Upper head- scales unequal, rough, keeled or subconical, one or two enlarged, 
usually one trihedral, in the middle of the forehead; occipital* enlarged, 
the pineal foramen in a crater-like pit, and surrounded by conical spinose 
scales; 9 to 13 scales across the head, from one superciliary edge to the 
other; 12 to 16 upper labials on each side; 2 to 4 series of scales between 
the upper^, labials and the nasal. Gular and ventral scales keeled, usually 
strongly, more or less mucronate, usually very strongly. Scale at the base 
of the claw, on the dorsal surface of the toes, uni- or tricarinate, and not or 
but little longer than the others ; subdigital scales spinose, 12 to 16 in 
a longitudinal series under the third toe. Caudal scales strongly keeled 
and more or less distinctly mucronate, not forming whorls, equal except at 
the base, where their character partakes of that of the body. Male with 
a single row, exceptionally two rows f of rather small, sometimes very 
indistinct preanal pores. 
* Eepresenting- the interparietal of other lizards. Following the example of 
previous authors, and for convenience, we have used the term " occipital " for this 
scale, although it is not homologous with that so-called in Lacerta, 
t As noticed by Dumeril and Bibron, 
