( 99 ) 



Colour brownish olive, male with generally a white hand along 

 each side of the back. Sis or seven brown bars across the back 

 between the bands. Legs and tail barred with brown. A l^own 

 band edged with white beween the orbits. Throat and a streak 

 from eye to gape, white. Gular sack immaculate. 



Length, body 7-00 ; tail, 3-00 = lO'OO inches. 



Inhabits Ceylon. 



Ltriocephaltjs, Merrem. 



{Amended to inchide Ceratophora, Gray.) 

 Scales of body unequal, or minute with distant series of large 

 scales. Nose armed with an obtuse hump or pointed horn. 



L. scutatus, L. 



Scales of back minute with several distant series of large 

 scales. A crest along the whole vertebral line, superciliary mar- 

 gins pointed behind. Nose in adults humped in both sexes. 

 Gular sack moderately developed. The hind foot extends to the 

 shoulder. Colour above uniform dark green, paler below. 

 - Grows to 15 inches, of which the tail is half. 



Inhabits the mountainous parts of Ceylon. 



L. Stoddartii Gray. 



Ceratophora Stoddartii, Gray. 



Throat with longitudinal series of quadrangular scales. A 

 very low crest along the neck, and forepart of the trunk. Scales, 

 on the back, small and smooth, on the sides very large and irre- 

 gular, with smaller ones intermixed. Snout surmounted by a 

 projecting horn, formed by a modified flexible pointed scale, 

 more developed in males than females, and white, or purplish 

 under excitement. Gular sack none. Colour dark green with 

 dark brown cross bands on the back, tail, and limbs ; generally a 

 whitish post-orbital streak. 



Inhabits the mountainous parts of Ceylon. 



L. Tennentii, Giinther. 



Ceratophora Tennentii, Giinther. 

 Throat with longitudinal series of quadrangular scales. Nuchal 

 crest very low. Scales on ihe back, smooth and much smaller 



