This map is a very early 16th-century rendering of the island of Hispaniola. It’s a little misleading because a discussion of Jamaica appears at the bottom that would continue on to the next page where the map of Jamaica would appear. But this is Hispaniola, and you’ll see an effort to render a town on the island called Isabella. Bordon was operating with very little information here, and so one can’t really see very much of the actual outline of the island of Hispaniola, which of course now includes Haiti and the Dominican Republic. Nevertheless, here again was an early, early mapmaker doing his best and creating what is at least a very interesting rendering.
For more details, view the catalog record: https://library.villanova.edu/Find/Record/1691613