298 AQkUlDJE. 



along its median fold. A large compressed skinny nuchal crest, 

 densely covered with very small smooth scales, and armed with 

 three or four erect, broad, pointed, triangular, very compressed 

 bony teeth ; dorsal crest composed of acute, very much compressed, 

 triangular bony spines. Dorsal scales small and more or less 

 keeled ; ventral scales larger and more strongly keeled. Scales on 

 the legs keeled. Caudal scales very strongly keeled ; occasionally 

 bands of larger keeled scales across the tail at irregular intervals. 

 Reddish brown, with seven or eight narrow dark-brown fasciae on 

 the body, and similar but indistinct fasciae on the tail and feet ; 

 front of the head and nape greyish, sides of the head stone-blue ; 

 gular pouch and space between tympanum and eye yeUow ; under- 

 side of body greyish yellow. 



Head and body 150 millim. ; tail 300 millim. 



Herbert River, Queensland. 



25. Gonyocephalns grandis. 



Dilophyrus grandis, G)-ay, Cat. p. 238. 

 Dilophyrus grandis, Canto?-, Cat. Mai. Rept. p. 34, pi. xx. ; Gilnth. 

 Sept. Brit. Ind. p. 136, 



Snout longer than the diameter of the orbit ; canthus rostralis 

 and supraciliary edge sharp, projecting ; tympanum nearly as large 

 as the eye-opening ; upper head-scales very small, bluntly keeled, 

 enlarged on the canthus rostralis and the supraciliary and supra- 

 orbital borders ; one or two enlarged tubercles on each side behind 

 the occiput ; ten to twelve upper and as many lower labials. Gular 

 sac moderately large, without serrated anterior edge ; gular scales 

 smaller than ventrals, smooth. Kuchal and dorsal crests subcon- 

 tinuous, separated by a deep notch, composed of long lanceolate 

 spines united together, free only at the tips, with smaller triangular 

 smooth spines at the base ; in the male, the height of the nuchal 

 crest nearly equals the length of the snout, and the dorsal crest is a 

 little lower ; in the female, the former is scarcely developed and 

 the latter is reduced to a slight serration. Dorsal scales very 

 small, with the points directed upwards and backwards ; ventral 

 scales rather small, smooth. Limbs above with equal smooth or 

 very feebly keeled scales ; third and fourth fingers equal ; the ad- 

 pressed hind limb reaches between the eye and the tip of the snout. 

 Tail strongly compressed, with sharp serrated upper edge ; caudal 

 scales smooth, with two rows of enlarged strongly keeled ones 

 inferiorly ; the length of the tail about twice and a half that of 

 head and body. Brown or oUve above, with or without darker cross 

 bands ; flanks with roundish yellow spots ; throat sometimes with 

 blue lines. 



Total length 560 millim. 



Head 44 „ 



Width of head 27 „ 



Body Ill „ 



