That very outdated paper refers to what is now named
Heterohyrax brucei Yellow-spotted Hyrax, Bush Hyrax

And the Yellow-spooted Hyrax occurs in the Kruger Park in the extreme north, north of the Punda Maria and Pafuri roads and along the eastern border as far south as Malonga Spring.
But one has to be careful, as this one and the rock hyrax are almost indistinguishible in the field.
And where ranges overlap, they occur in mixed groups
