XVI.] HIS ACCOUNT OF BRITAIN. 349
we thus discover that it represents the Arun, for that stream
appears in old maps as Tarant1. Plymouth Sound is deter-
mined by the mouth of the Tamarus (Tamar) being given. The
river Isaca, which is placed to the eastward of it, might be, as
far as the name is concerned, either the Exe or the Axe, but
the former of these is the more likely to have been mentioned
on account of its importance, because the town of Isca (Exeter)
was situated on its banks. The two south-western promontories
have each of them, for some unknown reason, a double name,
the Lizard being called on Ptolemy's table Damnonium or
Ocrinum, the Land's End Antivestaeum or Bolerium Promon-
torium.
On the western side of the island, following the coast north-
ward from this angle we first pass the Herculis
Promontorium (Hartland Point), and then reach c™?.Western
the Vexalla estuary, which corresponds to Bridge-
water Harbour; while the main inlet in this neighbourhood takes
its name of Sabriana from the Severn, On the southern coast
of Wales the mouth of the river Tubius (Towey) is noted, and
on the western coast that of the Tuerobis (Teify); between these
the promontory of Octapitarum (St. David's Head) intervenes,
and further to the north a striking projection is formed by the
cape of the Gangani, which is the extreme point of Carnarvon-
shire. In the interval between the north-west angle of Wales
and the Ituna estuary (Solway Firth) we meet with the estuaries
of Sete'ia (or Segei'a) and Belisama, the harbour of the Setantii
(or Segantii), and the Moricambe estuary: the position of these
identifies them with the well-marked mouths of the Dee, the
Mersey, and the Ribble, and with Morecambe Bay. The name
Ituna is undoubtedly that of the Eden, which river flows into
the Solway Firth; and the original of the appellation Solway
itself can be discovered in that of the neighbouring tribe of the
Selgovae. On the northern side of this inlet the river, Novius
(Nith) and the Deva (the Dee of Kirkcudbright) are also men-
tioned. From this point onward Ptolemy's great error about
the coast of Scotland begins to be apparent, for the peninsula
of Galloway, which in reality advances westward opposite the
1 Bradley, op. at., p. 390.