BASILICA NEPTUNI
a building restored by Hadrian (Hist.
Aug. 19), and
mentioned in Cur. in
Region IX and in Pol. Silv. (545).
This basilica is now
generally, and properly, identified with the
στόα
Ποσειδῶνος built by
Agrippa in 25 B.C. (Cass.
Dio liii. 27), and with the
Ποσειδω᾽νιον that was
burned in the great fire in the reign of Titus (ib. lxvi. 24)
and stood
between the Pantheon and the Hadrianeum. By some it
has also been
identified with the
PORTICUS ARGONAUTARUM
(q.v.), but it is probable
that they were separate structures, although near together
and possibly
adjoining (Lucas, Zur Geschichte der Neptunsbasilika,
Berlin 1904;
OJ 1912, 132-135).