TRIMERESURUS CARINATUS. 



One of the Crotalidse or Pit Vipers, found in Bengal, Sikkim, and 

 sub-Himalaya and Burmah. Giinther's description is as follows : — 

 " The second upper labial shield forms the front part of the facial pit. 

 Scales in from twenty- three to twenty -five rows ; those on the crown of 

 the head and on the temples small, strongly carinated. Ventrals, 164-169 ; 

 sub-caudals, 34-60. Grass green above, tail yellowish green; a more or 

 less distinct yellowish line runs along the outer series of scales, and is 

 sometimes absent. Lower parts greenish white. The general colour 

 is usually green ; sometimes there are large blackish spots on the sides ; 

 the lateral line is either well developed, white margined, with coral red 

 below, or it is absent. Tail pale, ruddy above, usually equal to one- 

 sixth the total length." 



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