Bungarus caeruleus (Indian krait (E) ;Thel karawala (S))

Indian krait (E) ;Thel karawala (S)
Bungarus caeruleus 

Toxicity: Deadly venomous

Size: 25 cm- 140 cm

Colouration

Back bluish black to a pale faded bluish grey, with white cross bars occurring in pairs which become less distinct at the anterior end. These cross bars are prominent in juveniles or young animals and the lines gradually disappear or become reduced to scattered cross bars in adults. The ventral side, or the underside is off-white.

Naja naja - Indian cobra, Spectacled cobra (E); Naya, Nagaya (S)

There is only one species of cobra (Indian cobra or Spectacled cobra) found in Sri Lanka. It is a deadly venomous species, and is the most commonly known venomous snake, amongst people in the island. 

Toxicity: Deadly venomous
Size: 180 cm

Colouration:

The colour on its back varies from dark brown to dark reddish brown or dark grey to grayish black with white or light yellow cross bars. The secross bars are either incomplete or complete with sets of four to six bands grouped at times. Hood contains a large usually white-coloured spectacle shaped marking, and the surrounding area is reddish. The ventral or the underside may vary from white to pale yellow to light brown, while some may have a single colouration, others may have cross bars or blotching