Ethnologically, these modern Nubians are a very mixed people, but their affiliation to negroes or negroids, which is based on physical and linguistic grounds, is confirmed by what is known of the history of the Nilotic peoples.
It is more probable that they are to be classed among the Negroids, with whom they appear to have intermingled to a certain extent in the upper basin of the Ituri, and perhaps elsewhere.
The advance-guard of this wave of pastoral Negroids, in fact primitive Bantu, mingled with the Bushmen and produced the Hottentots.
Eastward are the Zandeh peoples of the Welle district (primitive Negroids with a Hamitic or, more probably, Libyan strain), with whom the Dor tribe of Nilotes on their eastern border show certain affinities; while to the west along the coast are the Guinea Negroes of primitive type.
Leaving the forest zone and entering the more open country there are, on the north from the Niger to the Nile, a number of Negroids strongly tinged with Libyan blood and professing the Mahommedan religion.