It is found on the Caribbean island of Sint Eustatius, and on Saint Kitts and Nevis, where it is more scarce.

Adults of both sexes have a dark olive-green dorsal surface, tinged with reddish brown.

Its underside is blue-gray, with a peach-colored throat and chin separated by a darker region.

Its flanks are spotted and marbled, and its back and sides have narrow stripes along its length that fade towards its tail.

The St. Christopher ameiva was originally described in early 1802 by George Shaw as Lacerta erythrocephala.