Marmarica in
ancient geography referred to the part of the
North African coast between
Cyrenaica and
Aegyptus. It corresponds to what is now the border region between
Libya and
Egypt, including the towns of
Bomba (ancient
Phthia),
Timimi (ancient
Paliurus),
Tobruk (ancient
Antipyrgus),
Acroma (ancient
Gonia),
Bardiya,
As-Salum,
Sidi Barrani (ancient
Zygra). It extended southward to a considerable distance, to the inclusion of
Siwa Oasis, at the time known for its sanctuary to
Ammon. The eastern part of Marmarica, by some geographers considered a separate district between Marmarica and Aegyptus, was known as
Libycus Nomus. In
Late Antiquity, Marmarica was also known as
Libya Inferior, while Cyrenaica was known as
Libya Superior.