68 AGAMID.B. 



and temple (tliese tubercles less distinct in the young); 10 upper and 

 8 lower labials ; gular sac large ; gular fold distinct only on the 

 sides ; gular scales very small, smooth or obtusely keeled. 

 jS^uchal crest formed of large triangular lobes, in contact with each 

 other at the base ; the crest continuous with the dorsal, the lobes 

 of which are much smaller and gradually decrease in size. Dorsal 

 scales small, equal, obtusely keeled, the points directed upw^ards 

 and backx^ards, very small on the flanks ; ventral scales larger, 

 sharply keeled. Limbs above with large, equal, keeled scales ; 

 fourth finger slightly longer than third ; adpressed hind limb 

 reaching anterior border of eye. Tail compressed, with serrated 

 upper edge at the base. Greyish olive above, with four oblique, 

 blackish bars on each side ; eyelids black ; a black bar from eye 

 to ear ; an oblique black bar in front of the shoulder ; whitish 

 beneath. 



From snout to vent 152 millim. ; tail 320. 



The type specimen was obtained on the side of the final peak 

 of Gunoug Tahan, altitude 5200 feet. I have since examined a 

 young specimen from the mountains of the Selangor main range, 

 between 2000 and 3000 feet, preserved in the Selangor Museum. 



This aberrant species connects Gonifocej)7iahis with Calotes. 



Genus ACANTHOSAURA. 



Gray, Griff. A. K. ix, Syn. p. 56 (1831). 



Tympanum distinct. Body usually compressed, covered with 

 unequal-sized scales. A dorso-uuchal crest. No gular fold, no. 

 gular sac. No prseanal or femoral pores. 



South-Eastern Asia. Two species in the Malay Peninsula : — 



Postorbital aud nuchal spines at least f diameter 



of orbit A. armata, p. 68. 



Postorbital and nuchal spines not more than 



5 diameter of orbit A. cruci(/era, p. 69. 



68. Acanthosaiira armata. 



A(jama anncitn, Gray, Zool. Journ. iii, p. 216 (1827). 



Lophyrus annatiis, Cantor, Journ. Asiat. Soc. Bang, xvi, p. 638 



(1847). 

 Acantliosaura armata, Giiutli. Eept. Brit. Ind. p. 148 (1864) ; 



Bouleng. Cat. Liz. i, p. 30], pi. xxii, fig. 1 (1885) ; id. Faun. Brit. 



Ind., Ilept. p. 125 (1890); S. Flower, P.Z. S. 1899, p. 638; 



Bouleng. Fascic. Malay., Zool. i, p. 153 (1903). 



Snout as long as or slightly shorter than diameter of orbit ; 

 canthus rostralis angular ; upper head-scales keeled, much larger 

 on supra-orbital region ; a long spine (| to 1 diameter of orbit) 

 behind superciliary edge; 11 to 13 upper and 12 to 15 lower 

 labials ; tympanum nearly as large as eye-opening ; gular scales 

 strongly keeled, much smaller than veutrals. An oblique fold in 

 front of shoulder. A long spine on eacli side of nape, above- 



