The species is endemic to Mauritius, including nearby islets.

[2] The specific name, boutonii, is in honor of French botanist Louis Sulpice Bouton.

[3] The referred natural habitat of C. boutonii is the marine intertidal zone, at altitudes from sea level to 43 m (141 ft).

[1] C. boultonii may attain a snout-to-vent length (SVL) of almost 5 cm (2.0 in), and a tail length slightly greater than SVL.

[1] C. boutonii preys upon small species of insects, crustaceans, and fishes.