100 



T. FROMTICINCTUS, Gthv. 



Ventrals 190, subc. 140. Rostral small, nasals elongate, 

 contiguous. Grass-green or bronze, with black yellow-edged 

 lateral stripe. 



Swamps in Arakan. 



PASSERITA, Gray. 



Snout very long, ending in a flexible apijendage ; no 

 lorecd ; preocular region concave. Head -shields regular. 

 Scales 15. 



P. MYCTERizANS, L. TliG common green tree-snake. Plate 



XVI, fig. 5. 



Ventrals 172-188, subc. 140-166. Grass-green, with yellow 

 lateral stripe ; paler below ; black and white cross-bands, on 

 the interstitial skin. This is the most common tree-snake, 

 and is sometimes called the " eye-snake," in consequence of 

 an idea prevalent amongst otherwise sane Englishmen that 

 it is in the habit of hanging by the tail from a branch of a 

 tree for the purpose of hitting passers-by in the eye. It is 

 rare in Burma and hilly parts. Grows to G feet in length, 

 the tail beins: four-tenths. 



o 

 p. PURPURASCENS, Gthv. 



Ventrals 194, subc. 154. Brownish grey, marbled with 

 purple and dotted with brown. 

 Ceylon. 



Family XVI— DIPSADID^. 



Tree-snakes with vertical pupil, short broad head, very 

 distinct from neck, body compressed, elongate. Head-shields 

 regular. Scales smooth, imbricate, the vertebral series 

 enlaro-ed. Anal entire. Last tooth elon^'ate and cjrooved : the 

 front tooth also elonci'ate sometimes. 



