91 



panum hidden. A dorsal crest; a very small gular sac in both 

 sexes; a slight transverse fold across the throat. No praeanal 

 or femoral pores. Tail prehensile. 



Distribution. Ceylon; Sumatra. 



A single species. 



I. Cophotis sumatrana Hubrecht. 



Cophotis sumatrana^ Hubrecht, Notes Leyden Mus. I 1879, p. 243. 

 Cophotis sumatrana^ Boulenger, Cat. Liz. I 1885, p. 276. 



Head tetrahedral, rather narrow, snout somewhat produced ; 

 tympanum hidden; a small gular sac. Upper surface of head 

 covered with small, irregular shields; a rostral appendage, con- 



Fig. 46. Cophofis sumatrana Hubrecht. Natural Size. 



sisting of a single, pointed, hornhke scale, nostril lateral. A 

 fringe of elongated scales along the superciliary ridge; a large 

 pointed scale on both sides behind the eye; nine upper and 

 eight lower labials. Body compressed, covered with very large, 

 imbricate scales, irregularly arranged in transverse rows, their 

 free borders turned downwards; some of them keeled. Nuchal 

 crest composed of nine larger and several smaller scales, elong- 

 ate and pointed; a dorsal crest, separated from the former, 

 consisting of about i8 similar scales. Tail covered above and 

 below with large scales; a caudal crest of twenty-five scales. 

 Limbs moderate, toes with carinated transverse scales below; 

 t^iird and fourth toes nearly equal. 



