25^ AfiAMIS^. 



** Five toes. 



f Tympanum hidden. 

 Fifth toe short, not longer than first ; no dorsal crest. 



3. Otocryptis, p. 271. 



Three parallel longitudinal folds on each side of the middle of the 

 throat, curved and converging backwards, forming a U-shaped 

 figure 4. Ptyctolsemus, p. 273. 



A dorsal crest § ; scales sjnall ; no fold across the throat nor in 

 front of the shoulder 5. Aphaniotis, p. 274. 



A dorsal crest : scales very large, subequal, irregular ; tail pre- 

 hensile 7. Cophotis, p. 275. 



Fo dorsal crest ; a large rostral appendage, at least in the male. 



8. Ceratophora, p. 277. 



No dorsal crest ; dorsal scales small, intermixed with very large 

 conical tubercles 10. Phoxophrys, p. 280. 



A dorsal crest ; a y-shaped gular fold ; a bony supraorbital arch. 



11. Lyrlocephalus, p. 281. 



A dorsal crest ; an oblique fold in front of the shoulder. 



14. Japalura, p. 307. 



ft Tympanum exposed. 

 Digits not keeled iaferiorly 6. Lophocalotes, p. 274. 



Snout ending in a long compressed appendage. 



9. Harpesaurus, p. 279. 



A strong fold across the throat. . , . 12. Gonyocephaltts, p. 282. 



No fold across the throat ; dorsal scales unequal ; no gular pouch. 



13. Acanthosaura, p. 299. 



No fold across the throat ; dorsal scales large, unequal ; males with 

 a gular pouch 15. Salea, p. 312. 



No fold, or a very feeble one, across the throat ; dorsal scales equal. 



16. Calotes, p. 314. 



No fold across the throat ; scales minute, equal ; a gular pouch. 



17. Chelosania, p. 331. 



/3. Body more or less depressed. 

 Tympanum exposed ; males without calose prseanal scales. 



18. Charasia, p. 332. 



§ The presence in the male of a dorsal crest is indicated in the female by a 

 regular vertebral series of strongly keeled scales. 



