To Italy was assigned the northern half of the Dalmatian mainland as far as Cape Planka, and all the islands save Krk (Veglia) and Rab (Arbe) in the N., Solta and Brazza in front of Spalato, and the few which lie to the south of Meleda.
They begin with Mar Rab Sheshna (7th century) and continue to Hai Gaon, who died in 1038, and are full of historical and literary interest.
Inscriptions of the 3rd and 2nd centuries B.C. mention a Rab (chief) in Sidon, Cyprus and Gaulus (Gozo); what his position was it is difficult to say; in the colonies he may have been a district governor.
Abba bar Kahana, who was confused with a predecessor, Rab Kahana.
In Babylonia, however, learning still flourished, and with Rab Ashi (352-427) the arranging of the present framework of the Gemara may have been taken in hand.
He is associated with the fame of his great contemporary Rab (Abba Araka q.v.).