English : Trinket snake
Binomial Name :Coelognathus helena
Sinhala : කටකලුවා / හබරලියා [Katakaluwa / Habaraliya]
C. helena is a nonvenomous snake of Sri Lanka. This snake can be found in wet zone and dry zone with the elevation above the sea level is lesser than 1000 meters. It has a black color tongue and a mouth. Mouth is opened to show black color when threatened.