A circumstance occurs in the Itinerary, which would determine how near this route approaches to the Coast of the Mediterranean Sea; if we might depend on the accuracy of the Itinerist. The dates produced in the Plain of _Gegabib_, are gathered by the people of _Duna_, who inhabit the sea coast, eight days journey off; or about one hundred and thirty miles. No such place as _Duna_ appears in the modern maps; but _Derna_ (antiently _Darnis_) does: and it is situated within the confines of Tripoli, as Duna is said to be. But the distance must be faulty; because _Augela_ is the nearest point in this route, to Derna, though ten days from it: and _Gegabib_, is seven days from Augela, in a direction that still increases the distance. Augela is found in Herodotus, Book IV. under the name of _Ægila_; and in Ptolemy and Pliny it is written _Augila_. In Ptolemy, Africa Tab. III. it is placed about 197 miles from the sea coast, and about a degree of longitude to the eastward of _Darnis_. Its longitudinal position from Mourzouk and Cairo, agrees very well: and considering the extent of Ptolemy’s local knowledge in this quarter, we may suppose him well acquainted with its distance from the coast. Allowance must be made for an excess of distance given by Ptolemy’s scale, in this Map; and it being in the proportion of twenty-seven to twenty-three, the one hundred and ninety-seven miles should be reduced to one hundred and sixty-eight: and according to this, Augela ought to stand in latitude 29° 20′; and nearly midway between Mourzouk and Cairo. Gegabib, as has been said before, is seven days journey from Augela, towards Cairo; and as I have a particular pleasure in producing any authority that serves to prove the veracity of such an Author as HERODOTUS, I shall just mention, that (in B. IV.) he says, that the _Nasamones_ in the Summer season, leave their cattle on the coast, and go to the plains of Ægila, to gather the fruit of the Palm trees, which abound in that place. The portion of this coast, is marked by its lying on the West of Teuchira,[36] a sea-port that lay within the district of _Cyrene_, now better known by the names of Curin and Barca. Ptolemy’s Nasamones, occupy, in respect of _Augila_, the very spot where the dates are now gathered in the plain of _Gegabib_: and therefore we may conclude that the Nasamones’ Territories extended at least from that plain, to the Eastern Coast of the Great Syrtis. It may, perhaps, in future, be known where the Port or Coast of Duna is; whether it be Derna, the antient Darnis, or some place on the Syrtis.