12. GONTOCEPHAITTS. 293 



Coryphophylax maximiliani (Fitz.), Steind. Novara, Hept. p. 80, pi. ii. 

 fig. 6. 



Snout longer than the diameter of the orbit ; canthus rostralis 

 and supraciliary edge sharp; tympanum nearly as large as the eye- 

 opening ; upper head-scales of unequal size, strongly keeled ; a few 

 enlarged tubercles on the back of the head ; seven or eight upper 

 and as many lower labials. Gular sac very small; gular scales 

 smaller than ventrals, keeled. Nuchal crest not continuous with 

 dorsal, formed of triangular spines, the longest of which measure 

 less than the diameter of the eye-opening, inserted on a slight fold 

 of the skin ; dorsal crest a serrated ridge. Dorsal scales small, 

 keeled, with the points directed upwards and backwards, with a few 

 irregularly scattered enlarged ones ; ventral scales rather small, 

 strongly keeled. Limbs above with subequal keeled scales ; third 

 and fourth fingers equal ; the adpressed hind limb reaches the 

 anterior border of the orbit, or between the latter and the nostril. 

 Tail strongly compressed, with serrated upper edge, with keeled 

 scales which are larger inf eriorly ; the length of the tail a little more 

 than twice that of head and body. Brown or olive above, spotted or 

 reticulated with black on the sides ; sometimes a light, dark-edged 

 band along each side of the back. 



Total length 294 miUim. 



Head 26 



. Width of head 16 



Body 58 



Fore limb 46 



Hind limb 82 



Tail 210 



Andaman and Nicobar Islands. 



Dr. Anderson [P.]. 

 Prof. Reinhardt [P.]. 



16. Gonyoceplialxis hmuii. 



Tiaris humei, Stoliczha, Journ. As. Soc. Beng. xlii. 1873, p. 167. 



Near O. subcristatus, but with the crest very much more deve- 

 loped ; the nuchal part is considerably higher than the dorsal one. 

 General coloration greenish olive, on the top of the head brownish ; 

 sides of the entire body more or less distinctly and rather densely 

 reticulated and spotted with black and yellow ; sides of head and 

 neck and the gular sac tinged with purplish blue, labials spotted 

 with blue ; chin mostly yeUow. 



Head and body 110 miUim. ; tail 295 millim. 



Tillingchang Island, Nicobars, 



