Twenty one specimens of the poorly-known skink Mabuya ivensii Bocage 1879, collected from northwestern Zambia and adjacent Zaire, represent the first records of the species from these countries. Continued recognition of the eastern subspecies M.i. septemlineata Laurent 1964 is not supported. Recognition of a monotypic genus, Lubuya Horton 1972, for ivensii is also rejected. The species shows sexual dimorphism in size, females having a maximum snout-vent length of 148 mm, males reaching only 120 mm SVL.