PORTICUS ARGONAUTARUM
built by Agrippa in 25 B.C. (Cass.
Dio liii. 27),
probably near (or, as Hilsen thinks, enclosing) the temple of
HADRIAN
(q.v.). It derived its name from the paintings on its walls of the adventures of the Argonauts, and seems to have been also called the porticus
Agrippiana (Schol.
Iuv. vi. 54). Cassius Dio (loc. cit.) calls it
στοὰ τοῦ ποσειδῶνος, and elsewhere (lxvi. 24) speaks of a
Ποσειδώνιον, which is
probably the same building. It is sometimes identified with the
BASILICA
NEPTUNI (q.v.), although both names occur in the Curiosum in Reg. IX.
It is possible that the porticus may have belonged to a temple of Neptune,
although
Ποσειδώνιον does not necessarily refer to a temple, and there is
no other evidence for the existence of one in this region. This porticus
was one of the most frequented in Rome (
Mart. ii. 14. 6;
iii. 20. 11;
xi. I. 12; HJ 574; Lucas, Zur Geschichte der Neptunsbasilica in Rom,
Berlin 1904;
OJ 1912, 132 ff.).