During September 1951, two interesting Gerrhosaurids were collected by Dr C. Koch at Port Alexander (between Mossamedes and the mouth of the Kunene River), southern Angola, when taking part in the Peabody-Harvard Expedition. These two specimens ((an adult female T.M. no. 22580; and a juvenile; and a juvenile, T.M. no. 22581) are without doubt referable to Gerrhosaurus skoogi Andersson (also from the same locality) and, together with the latter, differ so markedly from all other forms of Gerrhosaurus that the erection of a new genus to include this form seems warranted. Keywords: Gerrhosaurida, Gerrhosauridae, New genus, Plated lizards, Reptilia.