Indiae orientalis nova descriptio

Johannes Janssonius was an Amsterdam publisher, bookseller, and mapmaker who became one of the leading figures in the continuation of the Mercator-Hondius atlas tradition. In 1612 he married Elisabeth Hondius, daughter of Jodocus Hondius I, and in 1630 he entered into partnership with his brother-in-law Henricus Hondius. Their Atlantis maioris appendix, sive pars altera of 1630 expanded the Mercator-Hondius atlas project and placed the firm in direct competition with the Blaeu publishing house.

This map of Southeast Asia and the Philippines first appeared in the Appendix in 1630. It was issued twenty-five years after the Dutch East India Company sent Willem Jansz. to investigate New Guinea and lands to its east.

The map is significant for its incorporation of information from the Duyfken voyage of 1605–1606. Jansz. sailed from Banda to the south coast of New Guinea and then southward to the western coast of Cape York Peninsula, believing he was still following New Guinea. The map marks Duyfkens Eylant, one of the earliest printed references to this voyage in Dutch atlas cartography.

The map does not show the complete route of the voyage, and some relevant areas are obscured by the scale of miles. Even so, it is an important early printed witness to Dutch encounters with northern Australia and the continuing confusion over the relationship between New Guinea and Cape York.