In this way Arbelitis, the plain between the Karachok and Zagros, would fall within Adiabene, but it is sometimes made a distinct region, in which case Adiabene must be restricted to the flat between the two Zabs, the Tigris, and the harachok.

Chalonitis and Apolloniatis, which Strabo seems to place between these northern plains and Susiana, must be regarded as dividing between them the country south of the Lesser Zab, Apolloniatis (so called from its Greek capital, Apollonia) lying along the Tigris, and Chalonitis along the mountains from the pass of Derbend to Gilan.

Chalonitis seems to have taken its name from a capital city called Chala, which lay on the great route connecting Babylon with the southern Ecbatana, and in later times was known as Holwan.

Below Apolloniatis, and (like that district) skirting the Tigris, was Sittacene, (so named from its capital, Sittace which is commonly reckoned to Assyria, but seems more properly regarded as Susianian territory.) Such are the chief divisions of Assyria east of the Tigris.
West of the Tigris, the name Mesopotamia is commonly used, like the Aram-Naharaim of the Hebrews, for the whole country between the two great rivers.

Here are again several districts, of which little is known, as Acabene, Tigene, and Ancobaritis.