232 MR. A. W. E. O'SHAUGHNESSY ON [Feb. 1 



double row of very large broad plates, increasing jn size posteriorly, 

 leading to the chest. 



Sides of the neck and of the body anteriorly granular. Back 

 covered entirely with elongate narrow, strongly keeled scales, sharply 

 pointed posteriorly, in about eighteen longitudinal rows in the middle 

 of the body, and giving place to much smaller scales on the sides. 

 Ventral shields large and smooth, the middle ones square, the lateral 

 ones rounded, in six longitudinal series, with an additional small 

 external series on each side. Three posterior very long praeanal 

 shields, the middle one very narrow and straight, the two outer ones 

 broader and rounded. Lower caudal plates smooth, the upper ones, 

 continued from the back, keeled. Limbs with large scutes on the 

 anterior surfaces, as in other Lizards of this group. 



Fourth toe on the anterior limb a little longer than the third. 

 The scales beneath the toes with tooth-like projections ; so that all 

 the toes on both fore and hind feet are strongly pectinate. 



Femoral pores twelve. 



Dark greenish above (in spirits). The sides black, forming a broad 

 and well-defined stripe from the sides of the head to the tail, bounded 

 inferiorly by a narrow pure white stripe from the rostral to the hind 

 limb. A very remarkable pure white patch covers a part of the fore 

 limb, including the first, second, and third toes, and reaching up the 

 wrist and along the anterior scutes of the inner surface of the arms 

 to the elbow. Another isolated white patch is seen on the fore part 

 of the upper arm, near the body. The rest of the front or upper 

 surfaces of the fore limb are dark brown, black in the vicinity of the 

 white patches, and including the two remaining toes. The hind 

 limbs are paler brown, witli faint coloured ocelli. Lower surface of 

 the entire Lizard yellowish white, becoming bluish on the belly. 

 The upper surface of the trunk is variegated with dark spots and a 

 distinct zigzag pattern of light and dark brown extends the whole 

 length of the tail. The white lateral vitta on the head is rendered 

 more conspicuous by a short inferior streak of black along the labials, 

 and by the lower symphysial plate being black against the white of 

 the adjacent plates. 



millim. 



Total length 137 



Distance from tip of snout to ear-opening. . 16 



„ „ „ eye 6 



,, „ „ fore limb . . 29 



„ » ,. vent 70 



Length of fore limb 25 



„ fourth front toe . 6 



„ hind limb 36 



fourth hind toe 10 



» 



» 



third hind toe 8 



Characters which render this species at once conspicuous are the 

 peculiar white markings and the toothed undersurface of the toes. 

 The latter feature seems sufficient at once to distinguish the present 



