Aprilis Lacus
Aprilis Lacus an extensive marshy lake in Etruria, situated near the sea-shore between Populonium and the mouth of the Umbro, now called the Layo di Castiglione. It communicated with the sea by a narrow outlet, where there was a station for shipping, as well as one on the Via Aurelia. (Itin. Ant. pp. 292, 500.) The amnis Prille,
mentioned by Pliny (3.5. s. 8), between Populonium and the Umbro, is evidently a corruption of Prilis, and it is probable that the Prelius Lacus noticed by Cicero (pro Mil. 27), is only another form of the same name. [PRELIUS LACUS]
From William Smith (ed.), Dictionary of Greek and Roman Geography. Text provided under a CC BY-SA license by Perseus Digital Library, http://www.perseus.tufts.edu, with funding from the National Endowment for the Humanities and Tufts University. Data accessed from https://github.com/PerseusDL/canonical-pdlrefwk/ on 17 October 2026.