252 
Transactions of the Eoyal Society of South Africa. 
D. Var. ACULEATA. 
Agama acuJeata, Duiii. Bibr. Erp. Grc'n. iv, p. 499 (1837); Bouleng. 
Cat. Liz. i, p. 351 (1885). 
Agama infralineata, Peters, Mon. Berl. Ac. 1877, p. 613. 
This is certainly the Agama so named by the authors of the Erpetologie 
Gcnerale, but doubts may be entertained as to its being- the A. aculeata of 
Merrem, which is probably a synonym of A. Jrispida. The name is therefore 
only used provisionally. The senior author has recently united this form 
with A. armata, but we now believe the two deserve to be upheld as distinct 
varieties, the latter differing in its typical form in the head being longer 
than broad and the ventral scales decidedly keeled ; however, there are so 
many annectant specimens that a specific separation is not warranted. 
Description of the specimens in the British Museum : 
Form. — Body more depressed than usual in J., armata. Head as long as 
broad ; snout short , rounded ; canthus rostralis very short ; nostril directed 
outwards, in a convex but not tubular shield, pierced on or just below the 
canthus rostralis ; length of head 3f to 4f times in length to vent. Diameter 
of ear-opening equal to or a little less than cleft of closed eye. Limbs 
short or moderately elongate ; the hind limb, pressed against the body, 
reaches the shoulder, the neck, or the ear ; length of hand equal to or 
greater than depth of head ; fingers and toes as in A. armata ; tibia as long 
as, or shorter or longer than the head, shorter than the foot. Tail 
cylindrical, moderately slender, longer (1^ to nearly 1|-) than head and body. 
Measurements : 
1. 
2. 
3. 
4. 
Snout to vent 
. 105 
80 
83 
93 
Head . 
24 
21 
21 
21 
Width of head 
24 
21 
21 
21 
Depth of head 
16 
12 
14 
13 
Diameter of eye- 
■cleft . 
4-5 
4-5 
4 
4 
,, ,, ear- 
-opening 
4 
4 
4 
3-5 
Fore limb 
47 
37 
40 
45 
Hand . 
18 
14 
15 
16 
Hind limb . 
68 
55 
52 
58 
Tibia . 
24 
19 
18 
21 
Foot . 
27 
21 
19 
22 
Tail 
. 154 
105 
p 
120 
1. ^,Kimberley. 2. , Okwa, Bechuanaland. 3. 9 » T^adysmith. 4. 9, 
Damaraland. 
Lepidosis. — Upper parts with strongly keeled scales, some or all shortly 
mucronate, with more or less enlarged ones which are strongly muconate and 
