Note 1486 — BOOK III. AN ACCOUNT OF COUNTRIES, NATIONS, SEAS, TOWNS, HAVENS, MOUNTAINS, RIVERS, DISTANCES, AND PEOPLES WHO NOW EXIST OR FORMERLY EXISTED. INTRODUCTION.
John Bostock translation
As already mentioned he seems to confound Formentera, which was called Ophiusa, with the present group of Columbrete, which islands were probably called Colubraria.