ACHERUSIA VALUS, a lake between Cumæ and
the promontory Misenum, now il Lago della Calvina.
(Cluverius). Some confound it with the Lacus Lucrini,
and others with the Lacus Avernæ. But Strabo and
Pliny distinguish them. The former takes it to be an
effusion, exundation, or washes of the sea, and there-
fore called by Lycophron, Αχερυσίας.—Also a lake
of Epirus, through which the Acheron runs.—There
is also an Acherusia, a peninsula of Bithynia on the
Euxine, near Heracleæ; and a cave there of the same
name, through which Hercules is fabled to have de-
scended to hell to drag forth Cerberus.