APPENDIX B. 
193 
those OD the neighbouring parts,, so as to form distinct crests ; and 
in C. affinis the body is grey or blackish^ with two or three broad^ 
irregular-shaped^ opaque white spots^ forming an interrupted streak 
on each side of the back of the animal. 
This species may be thus described : 
Chamaeleo laevigatus .- — Grey or bluish in spirits. Scales small^ 
flat^ subequal^ uniform; dorsal line nearly smooth^ scarcely crested. 
Belly with a crest of larger acute white scales. Occiput slightly 
raised in the centre by a slight keel ; the superciliary ridges and 
the central keel scarcely dentated. The legs elongated^ very 
slender.^^ 
Hab.; Khartoum. 
VOL. II. 
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