CATI FONS
a spring on the western slope of the Quirinal,
near the porta
Salutaris, from which the Petronia amnis flowed down
into Caprae palus.
It took its name from a certain Catus (Fest. 45), and is
perhaps the
present Acqua di S. Felice (HJ 402; LA 24), which rises in
the courtyard
of the royal palace.