99 



Family XV.— DRYIOPHID^E. 



Body and tail excessively slender ; snout much elongated 

 and tapering. Eye moderate, with horizontal pupil. Head- 

 shields normal, nostril in a single nasal. Scales 15-17, 

 narrow, much imbricate ; the vertebral series large, fan- 

 shaped. Ventrals broad, not much keeled. Anal bifid. Tail 

 often nearly as long as the body. 



TROPIDOCOCCYX, Gunther. 



Snout tapering, but without any appendage. Loreal none. 

 Both frontals come down low and concave. 



T. PERROTETi, D. and B. 



Scales 15, smooth, last dorsals sometimes keeled. Ventrals 

 140-143, subc. 66-82. Grass-green ; yellow lateral stripe ; 

 belly yellowish. 



Nilgiris, where it replaces Passei'ita mycterizans, 



TRAGOPS, Wagler. 



Snout very long, but without any appendage. Loreal 

 present, its region concave. Scales 15. 



T. PRASINUS, Reinw. The huff tree-snake. Plate XVI, fig. 4. 

 Ventrals 212-234, subc. 176-203. Colour variable, some- 

 times green, with white lateral stripe ; a not uncommon 

 variety is light ochre, belly white, with a lateral ochre stripe, 

 under the tail yellow, with white lateral stripe. It also 

 occurs of a pure white, with interstitial black markings. 

 Bengal, Burma, where it replaces Passerita mycterizans. 



T. DISPAR, Gthr, 



Ventrals 151, subc. 100. Males bright green, females 

 bronze-coloured ; black interstitial skin ; yellow lateral stripe* 

 Anamullays. 



