The toeless snake skink (Nessia monodactyla), also known as the one-toed nessia, is a species of skink endemic to island of Sri Lanka.

Widely distributed in the wet climatic zones from 400-1500m, and known localities include Kandy, Nawalapitiya, Deniyaya, and Peradeniya.

Body is slender and of equal girth, from head to tail.

Hides under rubble, decaying logs and in soil or humus in montane forests.

When exposed, they immediately wriggle into loose soil or under rubble.