The fourth state of Girolamo Ruscelli’s modern map of the British Isles published in his edition of Ptolemy’s ‘Geographia’, 1561. For this state issued in 1598 a ship has been added in the north Atlantic ocean and two sea monsters. The cartography is directly derived from George Lily’s exceedingly rare map published in Rome, 1546, considered the first modern map of the British Isles. Queen Elizabeth I had just ascended the throne of England only three years earlier. The border contains figures of latitude and longitude, the ‘G’ in the corners most likely standing for the Latin ‘gradus’ for degrees. This map is one of two that were engraved on the same plate.Girolamo Ruscelli (c.1504-66) edited the Latin text for this quarto edition of Claudius Ptolemy’s classic work ‘Geographia’ which included newly engraved copper plates engraved by the brothers Giulio (fl.1540-88) and Livio (c.1520-76) Sanuto. The work was first published by Vincenzo Valgrisi in Venice. The map appeared in the Latin edition of 1562, and both the Italian and Latin issues of 1564. In 1574 the two maps were separated into two copper plates, and it continued in use until the final edition of 1599. Provenance: Clive A. Burden Ltd.; private English collection. Nordenskiold (1979) 227; Shirley (1991) 68; Shirley (2004) T.Ptol 10f; Tooley’s Dictionary.