N. lawrencei is small, thin, and flat for its genus. Dorsally, it is dark brown. Ventrally, it is brownish gray to whitish. Adults usually have a snout-to-vent length (SVL) of . ==Geographic range==
Geographic range
N. lawrenci is found in the Richtersveld in the province of Northern Cape, South Africa. ==Habitat==
Habitat
The preferred natural habitats of N. lawrenci are rocky areas and shrubland, at altitudes of . ==Reproduction==