Lārĭus, ii, m.,
I a lake in Gallia Cisalpina, on which Comum lay , now Lago di Como , Verg. G. 2, 159; Plin. Ep. 9, 7, 1; Plin. 3, 19, 23, § 131.
II —Hence, Lārĭus , a, um, adj., of Larius, Larian : Larium litus, Cat. 35, 4.
LA´RIUS LACUS(ἡ Λάριος λίμνη: Lago di Como), one of the largest of the great lakes of Northern Italy...
Dictionary of Greek and Roman Geography