SOULABIE, Louis Ferdinand (soo-lah-bee), explorer, born in Pierre-fitte-Lestatas, Bearn, in 1587 ; died in Bahia in 1656. He became a Jesuit, was sent to labor among the Indians of Brazil, and was attached for years to the Amazon missions. His travels in the country, which extended to Napo river, gave him opportunities to make hydrographical observations, and he prepared a valuable chart of the basin of the Amazon, with which he became thoroughly familiar. In 1637 he became assistant of Father Cristobal Acufia and accompanied Texeira's expedition, which sailed down the Amazon from Peru to its mouth. The maps and geographical observations in Acufia's narrative, "Descubrimiento del Rio de las Amazonas" (Madrid, 1641), are Soulabie's work. Soulabie was afterward professor of theology in the college of the Jesuits at Bahia. He left in manuscript "Historia del descubrimiento y de la conquista de la America meridional," which was afterward published (Rome, 1752).