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Transactions of the Royal Society of South A frica. 
J)e Kroom . Scales on middle of back not imbricate, only very sliglitly 
keeled (136 scales round middle of body) ; no nuclial or dorsal crest. 
Tulbagli . Dorsal scales not imbricate, hexagonal and strongly keeled ; 
strong nuchal and dorsal crest for some distance below the shoulders, con- 
tinued along the remainder of the back by strong keels on the enlarged 
mid-dorsal scales ; a distinct gular pouch ; tail very compressed and crested. 
Nieuwoudtville . Dorsal scales small, strongly keeled and mucro- 
nate ; double row of slightly enlarged spinose scales forming a low but 
distinct dorsal crest. 
Ookiep Dorsal scales small, strongly keeled, rounded; becoming 
abruptly very much enlarged on the tail. 
Ookiep . Dorsal scales small, equal, those on the vertebral line 
smooth, the others strongly keeled and niucronate ; scales on u])per arm and 
tibia larger than the dorsals ; head long and pointed. 
Ookiep ? . Dorsal scaling of this specimen somewhat approaches that 
of A. i)laniceps. Another 9 ci^ud a from this locality have the general 
appearance of A. i)laniceps. 
Ookiep J . Dorsal scales very small ; snout pointed ; mid-dorsal scales 
smooth, otherwise keeled ; small dorsals becoming abruptly enlarged on the 
tail . 
Concordia <^ . Scaling throughout very small ; head long and pointed. 
Steinkopf — Kym end's Drift $ . Scales on and at either side of the 
mid-dorsal line much larger than those at the sides ; all dorsal scales more 
or less strongly keeled but not niucronate. 
lu a great many cases the dorsal scales are strongly keeled but rounded 
at the apex, not niucronate. In other cases they are rounded or hexagonal 
at the base, not imbricate. Sometimes smooth except low down on the sides. 
The typical Agama atra is distributed in the west from Daiiiaralaiid to 
the Cape, and it is also found in the interior of Cape Colony, the Orange 
Fj-ee State and the Transvaal. 
In the Kimberley neighbourhood this lizard is confined to the kopjes, 
where it makes its home in the clefts of the rocks, coming out to get food 
and bask in the sun. During the winter months it hibernates in these 
clefts, and at such times is found in company with Zonurus polyzonus and 
Pachydactylus hibrotii. 
Specimens with uniform dorsal scales might be confounded with Agama 
Icirkii, Blgr., found in Southern Rhodesia, in which, however, the lateral 
scales are directed inwards, as in A. hispida and A. anchietae, and a vertebral 
serration or w^ell-developed crest extends along the whole body ; the occipital 
is usually more enlarged. 
B. Yar. KUDis, var. no v. 
Specimens from the coastal districts of South Africa, east of the Cape 
Peninsula and as far north as Delagoa Bay, have a coarser lepidosis, with 
