The great plain of Sennar is mainly occupied by Hassania Arabs in the north, by Abu-Rof (Rufaya) Hamites of Beja stock in the east as far as Fazogli, and elsewhere by the negroid Funj and the group of tribes collectively known as Shangalla (the Bertat, Legas, Sienetjo, Guinus, Kadalos, &c.; see Shangalla).
The Somali belong to the Eastern (Ethiopic) Hamitic family of tribes, of which the other chief members are the neighbouring Galla and Afar, the Abyssinian Agau and the Beja tribes between the Nubian Nile and the Red Sea.
Their domain then began to be encroached upon from the east by the Blemmyes, who have been identified with the present Beja of the Nubian desert.
Here their most collective name was Bugaitae (Bou-yaaaT at), as appears from the Axumite inscription, whence the forms Buja, Beja, which occur in the oldest Arab records, and by which they are still known.
(For ethnology see also Hamitic Races, Beja, Ababda, Bisharin, Hadendoa, &c.).
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