a political division so far as our knowledge goes, are usually supposed to have been based
on the earlier local division described by Varro. This city of the Four
Regions (text fig. 5) was a stage of development intermediate between
the Palatine settlement (or the Septimontium) and what is ordinarily
called the Servian city, a stage that was the result of the union of the
Palatine and Esquiline settlements, that is shown by archaeological
evidence to have taken place about the middle of the seventh century B.C.
(Mon. L. xv. 764). The division into four regions remained in force
until the reorganisation of Augustus.
All the area within the POMERIUM (q.v.) was included in the regions
except, apparently, the Capitoline, perhaps because this hill was always
regarded as the citadel and religious centre of the city, and not as a
local division. Our knowledge of the area of the regions is derived principally from Varro's description (LL v. 46-54) of the location of the sacraria
of the ARGEI