This finely engraved map is derived from Giovanni Lorenzo d'Anania's 1582 map of the Americas and further based on the geography of Ortelius. Most notable is the characteristic bulge to the west coast of South America and the huge Southern Continent that attaches to Nova Guinea.Anian and Quivira appear on North America's bulbous western coast. Girolamo Porro engraved the map in 1596 for Magini's edition of Ptolemy's Geographia. This example comes from an edition published in either 1598 or 1621. On a sheet of Italian text measuring 7.8 x 11.3".