Throughout the southern Namib Desert, from Lüderitz to the Orange River (terrestrial). Based on a small sample of specimens from the Lüderitz area, Hewitt (1935) thought the Namibian population merited subspecific recognition, with the Orange River as the boundary. Haacke (1965) examined a much larger sample and could find no definitive reason for retaining this status, due to considerable variation throughout the species range. However, he left it unresolved, and this taxon, although not listed by recent authors, has not been definitively reviewed. Early records of this species at Tsaobis and Salem, near the Swakop River, as well as near Otjosongombe in the Waterberg area (Mertens, 1955) have not been subsequently corraborated. This species is known or expected to occur in the Namib-Naukluft Park, National Diamond Coast Recreation Area, Sperrgebiet and the Ai-Ais/Hunsberg Reserve.

(Source: GRIFFIN, M. (2002) - ANNOTATED CHECKLIST AND PROVISIONAL CONSERVATION STATUS OF NAMIBIAN REPTILES).