The specific name, thwaitesi, is in honor of English botanist George Henry Kendrick Thwaites.

[citation needed] A highly fossorial skink, C. theaitesi is known from the Knuckles Mountain Range, between 700–1,000 m (2,300–3,300 ft).

[citation needed] C. thwaitesi has small eyes with scaly lower eyelids.

The dorsum is dark brown, with a blackish-brown central region.

[citation needed] In many places, C. thwaitesi lives in sympatry with skinks of the genera Nessia and Lankascincus.