304 AOAMiD-a;. 



the tympanum, on each side of the nape above the tympanum. 

 Nuchal and dorsal crests continuous, the former composed of 

 short compressed spines, shorter than the greatest diameter of the 

 tympanum, tha latter reduced to a denticulation. Dorsal scales 

 very small, smooth or feebly keeled, with the points directed back- 

 wards or slightly upwards, intermixed with irregularly scattered, 

 slightly enlarged, keeled ones ; ventral scales larger than the en- 

 larged dorsals, strongly keeled. Limbs, and especially digits, shorter 

 than in the preceding species ; scales on the fore limb and tibia 

 subequal, strongly keeled, of femur more irregular ; fourth finger 

 slightly longer than third ; the adpressed hind limb reaches the 

 tympanum in the female, the eye in the male. Tail scarcely com- 

 pressed, as long as, or a little longer than, head and body, covered 

 with uniform strongly keeled scales, which are larger inferiorly. 

 Ground-colour of the male grey, of 'the female brownish red ; irre- 

 gular dark-brown bands across the back and the legs ; a yellowish- 

 olive band edged with black across the crown, from one siipracUiary 

 edge to the other ; an oblique short yellow band, broadly edged with 

 brown, from below the orbit to the angle of the mouth ; other dark- 

 brown streaks radiating from the eye. 



Total length 175 millim. 



Head 24 „ 



Width of head 20 „ 



Body QQ „ 



Fore limb 46 „ 



Hind limb 65 „ 



Tail 85 „ 



Siam. 



a^c. cJ $ • Chartaboum. M. Mouhot [0,]. (Types.) 



6. Acanthosaiira minor. (Plate XXIII. fig. 2.) 



Calotes minor, Gray, Cat. p. 244. 

 Oriocalotes minor, Giinth. Rept. Brit. Ind. p. 147. 

 Oharasia minor, Theob. Cat. Rept Brit. Lid. p. 113. 



Snout a little longer than the diameter of the orbit ; canthus 

 rostralis and supraciliary edge angular ; tympanum smaller than 

 the eye-opening ; upper head-scales keeled, of very irregular size, 

 enlarged on the supraorbital region ; a small spine, measuring a 

 little less than the vertical diameter of the tympanum, behind the 

 supraciliary edge ; two other similar spines on each side of the back 

 of the head, the foremost nearly equally distant from the tympanum 

 and the nuchal crest, the other just above the tympanum ; seven or 

 eight upper and as many lower labials. Gular scales a little smaller 

 than the ventrals. An oblique fold on each side of the neck, in 

 front of the shoulder. Nuchal and dorsal crests continuous, low, 

 reduced to a serrated ridge on the back. Dorsal scales rather large, 

 strongly keeled, the upper with the points directed obliquely 



