Periplus

Then follows a Periplus of the Euxine-Sea, which bears the name of Arrian, and was undoubtedly written by him in the time of Adrian, as the inſcription ſhews.

Source: wiktionary

The Periplûs of the Erythrêan Sea is the title prefixed to a work which contains the beſt account of the commerce carried on from the Red Sea and the coaſt of Africa to the Eaſt Indies, during the time that Egypt was a province of the Roman Empire.

Source: wiktionary

Another great source of geographical information both for the ancients themselves and, so far as they still exist, for us also, are the Peripli (περίπλοι), that is, descriptions of the coasts of certain seas, in which the towns, ports, and promontories are enumerated, and often with their distances from one another. These peripli were drawn up for the guidance of sailors who had occasion to visit these seas for commercial and other purposes.

Source: wiktionary

[…] the map of the world Ptolemy followed in his geography, finding the longitude that passed through the Gates of Herakles and the island of Rhodes, and placing north and south of it the world as recorded on the periploi of the Phoenician merchants.

Source: wiktionary