Dec. 1915. ON REPTILES AND BATRAGIIIANS FROM 247 

 THE COAST AND ISLANDS OF SOUTH-EAST SI AM. 



It is of sluggish disposition, but will bite viciously when caught. It 

 feeds upon small nianinials and other snakes. 



31. Dryophis prasinus, Boie. 



Blgr, Fascio. INIaliiy. Zool, I., p. 165 (1903) ; Mocquard, Les Eeptiles 

 deVlndo-Chine, p. 40 (I9U7) ; Smith, Jour. Bombay N. H.S., XXIII., 

 p 785 (1915) 



One example from Koh Chang and another from Koh Kut, both 

 stone-grey in colour. The one from Koh Chang, a male, was an un- 

 usually large specimen. It measured 1985 mm. in total length, the tail 

 forming 725 mm. 



32, Chrysopelea ornata, Shaw. 



Blgr, Faseic Malay. Zool., I, p 166 (1003) ; Mocquard, Les Reptiles 

 de I'Indo-Chiiie, p. 49 (1007) ; Suiith, Jour. Nat. Hist. Soc. Siam, I, 

 p. 175 (1915). 



Two examples of this beautiful snake were obtained at Klong 



Yai, and a third on Koh Chang. 



33. Hydrophis tuberculatus, Anders. 



Distira tubetrulafa, Boulenger, Cat. Snakes, Brit. ]\Ins , Yol. I, 



p. 293 (1896). 



Distira cyanocincta. Wall, Mom. Asiat. Soc, II, No. 8, p. 220 (1909). 



One example from Klong Yai, for the identification of which 

 we are indebted to Mr Boulenger. As only a very few specimens of 

 this snake are yet known to science, we append a description of our 

 specimen. 



Head small; eye less than its distance to the mouth ; rostral broader 

 than deep ; nostril connects by suture to 2nd labial ; frontal a little 

 longer than broad, much shorter than the parietals; 1 prae- and 1 post- 

 ocular ; a large anterior temporal ; 7 and 8 supralabials, the 3rd and 4th 

 entering the eye, 1 to 4 entire, the remainder divided horizontally; 4 large 

 infralabials, the first 3 in contact with the chin-shields ; 2 pairs of well 

 developed chin-shields, in contact with each other. Marginals after the 

 2nd infra-labial. Costals 32 anteriorly, 38 at the greatest diameter of 

 the body, sub-imbricate, with a short, faint keel, sometimes broken in 

 two. Diameter of neck about half the diameter of greatest thickness of 

 body. Ventrals 308, small. "equal to or less than two adjacent costals, 

 faintly bicarinate, the keels sometimes broken in two. 



Colour : Greenish white, with 55 broad black bands, which are 

 broader than their interspaces. Head black with yellow markings. 



