Ămăsēnus, i, m.,
a small river in Latium , eastward from the Pontine Marshes , now Amaseno , Verg. A. 7, 685; cf. Mann. Ital. 1, 626; Müll. Röms Camp. 2, 235.
AMASE´NUS a small river of Latium, still called the Amaseno, which rises in the Volscian mountains a...
Dictionary of Greek and Roman Geography