Ipsos Persas ipsumque Regem ascitis Sacis, et Rufiis, et Gellis, petit frater Ormies. Panegyric. Vet. iii. [ii.] 17. The Sacae were a nation of wandering Scythians, who encamped towards the Sources of the Oxus and the Jaxartes. The Gelli were the inhabitants of Ghilan, along the Caspian Sea, and who so long, under the name of Dilemites, infested the Persian monarchy. See D'Herbelot, Bibliotheque Orientale