Sonautes
Sonautēs, æ, m. , fleuve de Bithynie : Plin. 6, 4.
SONAUTES
SONAUTES according to Pliny (Plin. Nat. 6.1), a river in Pontus; while, according to Apollonius Rhodius (2.747), the Acheron in Bithynia was anciently called Soonautes (Σοωναύτης).
[L.S]