Karl Wilhelm Ludwig Muller (1813-94), who wrote in Latin under the name Carolus Mullerus, was a German classicist whose monumental five-volume Fragmenta historicorum graecorum (also reissued in the Cambridge Library Collection) remains an important resource today. Between 1855 and 1861, he also produced this valuable two-volume collection of the works of lesser-known Greek geographers. Volume 1 (1855) includes both the Periplus (‘Circumnavigation’) of Hanno the Carthaginian and the Periplus of Pseudo-Scylax. Also included is Agatharchides’ De mari Erythraeo (‘On the Erythraean Sea’). Volume 2 (1861) contains texts from the Roman imperial period, including Dionysius of Byzantium’s Anaplus Bospori (‘Voyage through the Bosphorus’) and the work of Dionysius Periegetes. The surviving Greek texts have parallel Latin translations, and Muller’s extensive prolegomena (also in Latin) discusses what is known about the authors, their works and the manuscript sources.