2jy(J A.GtAMIDM. 



11. Gonyocephalus interraptns. (Plate XXI.) 



Snout as long as the diameter of the orbit ; canthus rostralis and 

 supraciliary edge projecting; tympanum smaller than the eye- 

 opening ; upper head-scales smaU, keeled, slightly enlarged on the 

 supraorbital region ; scattered conical scales on the back of the head 

 and on the temple ; ten or eleven upper and eleven or thirteen lower 

 labials. Gular sac small, without serrated anterior edge; gular 

 scales strongly keeled, smaller than ventrals, intermixed with a few 

 enlarged ones on the sides. Nuchal crest formed of lanceolate spines 

 with smaller keeled ones at the base ; its height equals two thirds 

 the length of the snout; dorsal crest not continuous with, and 

 lower than, the nuchal, gradually decreasing in height. Dorsal 

 scales very small, smooth or indistinctly keeled, with the points 

 directed upwards and backwards ; enlarged scales on the flanks, 

 forming irregular vertical series ; numerous small tubercles on the 

 nape ; ventral scales of moderate size, keeled. Limbs with unequal 

 keeled scales ; third and fourth fingers equal ; the adpressed hind 

 limb reaches the nostril. Tail strongly compressed, with slightly 

 serrated upper edge ; caudal scales all keeled, largest inferiorly ; 

 length of the tail twice that of head and body. Pale olive above, 

 the enlarged tubercles and two cross bands, one on the nape, the 

 other between the shoulders, whitish ; tail with regular dark-brown 

 annuli ; limbs with rather indistinct dark cross bands ; throat with 

 very indistinct dark lines. 



Total length 280 millim. 



Head 29 „ 



Width of head 22 „ 



Body 66 „ 



Fore limb 53 „ 



Hind limb 85 „ 



Tail 185 „ 



Philippine Islands. 

 o. c? . Mindanao. Mr. G. Taylor [P.]. 



12. Gk)iiyocephalns diloplms. 



Tiaris megapogon {Schleg.), Grayy Cat. p. 239. 

 Lophyrus dilophus, Ihim, 8/- Bibr. iv. p. 419, pi. xlvi. 

 Gonyocephalus (Lophosaurus) dilophus, Fitz. Si/st. Rept. p. 45. 

 Tiaris dilophus, Doria, Ann. Mim. Genov. vi. 1874, p. 345. 

 Gonyocephalus (Tiaris) dilophus, Peters Sf Doria, Jbin, Mus. Genov. 

 xiii. 1878, p. 376. 



Upper head-scales smaU, strongly keeled ; occipital enlarged ; 

 tympanum quite as largo as the eye-opening ; eleven upper and as 

 many lower labials. Gular sac very large, with strongly serrated 

 anterior edge ; gular scales small, keeled, with scattered strongly 

 enlarged ones. Nuchal crest not continuous with dorsal, its height 



