(a more correct spelling than
), a festival celebrated in honour of Portunus
on the 17th of August. It is called also Tiberinalia
Philocal.), and Mommsen thence deduces that Portunus=Tiberinus (C. I.
i. p. 399); but Marquardt is probably right in taking
Portunus not to be the River God, but the protecting deity of the wharves on
the Tiber at Rome and of those at Ostia. He was “deus portuum”
(Cic. de Nat. Deor. 2.2.
, 66; cf. Verg. A. 5.241
festival was celebrated in two places: at Rome by the Pons Aemilius
), and at Ostia (Varro, L. L.
6.19). The connexion of Portunus with Tiberinus, the son of Janus, and
therefore of his worship with that of Janus, may explain his being also
termed “deus portarum” (Fest. Ep.
p. 56, 6).