Guttalus
Guttalus a small river on the coast of the Baltic, which, according to Solinus (20), existed on the west of the Vistula, and would therefore belong to Germany; but Pliny (4.28) places it on the east of the Vistula, whence it must be regarded as a Sarmatian river, and is perhaps the same as the modern Pregel.
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.