126 AGAMID^E. 



region ; a spine, measuring one half the diameter of the orbit, 

 terminates the supraciliary edge ; 9 or 10 upper and as many lower 

 labials ; gular scales strongly keeled, much smaller than the 

 ventrals. An oblique fold down each side of the neck, in front of 

 the shoulder ; a spine, the length of which does not exceed one half 

 the diameter of the orbit, on each side of the nape, above the tym- 

 panum. Nuchal crest not continuous with the dorsal, composed of 

 large compressed spines a little longer than the postorbital ones, 

 with the base concealed by two or three rows of smaller spines. 

 Dorsal crest much lower than the nuchal, gradually decreasing 

 in size, reduced posteriorly to a very feeble denticulation. Dorsal 

 scales not quite so small as in A. armata, with the point directed 

 upwards, intermixed with irregularly scattered, enlarged, rhom- 

 boidal, strongly keeled scales ; ventral scales larger than the enlarged 

 dorsals, strongly keeled. Fore limb and tibia above with equal 

 keeled scales, femur with unequal ones ; fourth finger very slightly 

 longer than third ; the adpressed hind limb reaches the anterior 

 border of the orbit in the female, the end of the snout in the male. 

 Tail compressed, nearly twice as long as head and body, covered 

 with uniform strongly keeled scales, which are larger beneath. 

 Pinkish grey above, with brown spots and marblings enclosing 

 roundish light spots ; a large cruciform dark-brown marking on the 

 nape, the lateral branches descending along the antehumeral fold 

 to the throat ; eyelids and a streak from the end of the snout to the 

 tympanum, through the orbit, dark brown ; limbs and tail with 

 dark and light cross bands. 



From snout to vent 3 - 8 inches ; tail 6'8. 



Hdb. Tenasseriin. 



133. Acanthosaura lamnidentata. 



Acanthosaura lamnidentata, Souleny. Cat. Liz. i, p. 302, pi. xxii, fig. 3. 



Snout as long as diameter of orbit ; canthus rostralis and supra- 

 ciliary edge angular ; tympanum a little smaller than eye-opening ; 

 upper head-scales keeled, larger on the supraorbital region ; a 

 spine, measuring 3 to -f the diameter of the orbit, terminates the 

 supraciliary edge; 10 or 11 upper and 11 or 12 lower labials; 

 gular scales strongly keeled, smaller than the ventrals. An ob- 

 lique fold down each side of the neck, in front of the shoulder ; a 

 spine a little shorter than the postorbital on each side of the nape 

 above the tympanum. Nuchal crest not continuous with dorsal, 

 composed of compressed triangular scales, the longest of which equal 

 the postorbital spine ; spines at base of nuchal crest small. Dorsal 

 crest very low, formed of triangular scales, gradually decreasing 

 in size behind, where it is reduced to a slight denticulation. Dorsal 

 scales extremely small, with the points directed upwards, inter- 

 mixed with irregularly scattered, enlarged, rhomboidal, strongly 

 keeled scales ; ventral scales larger than the enlarged dorsals, 

 strongly keeled. Fore limb and tibia above with equal keeled 



