- For others named Catius, see Catia (gens).
Catius was plebeian aedile with Lucius Porcius Licinius in 210 BC. Using money collected through fines, they dedicated bronze statues at the Temple of Ceres and presented games (ludi) that the Augustan historian Livy says were quite magnificent for their time.
In 207 BC, Catius was left in charge of the Roman camp at Canusium when his commanding officer Gaius Claudius Tiberius Nero joined consular colleague Marcus Livius Salinator to fight against Hasdrubal. Nero's move was virtually unprecedented; a consul was to fight only within his own provincia with the troops assigned to him by the senate, but Nero thought the circumstances justified extreme measures which also gave him an element of surprise. Catius was left to face off against Hannibal, who decided to stay put. This delegation of authority anticipated a highly controversial case two years later concerning an egregious exercise of imperium under Scipio Africanus by his legate Quintus Pleminius; Catius, by contrast, had benefitted from the nearby support of the experienced and respected Fulvius Flaccus, a four-time consul.
In 205, Catius and Marcus Pomponius Matho, who would later become the praetor in charge of the investigation against Pleminius, were sent as Rome's ambassadors to Delphi with gifts to dedicate at the temple. These included a 200-pound gold crown and images (simulacra) of the spoils seized from Hasdrubal, amounting to 1,000 pounds of silver. This embassy occurred in the context of what Livy characterizes as a sudden attack of religiosity at Rome, which in addition to a consultation with the Sibylline books resulted most famously in the importation of the cult of Cybele to Rome.
Catius and Matho received favorable omens when they sacrificed to Pythian Apollo at Delphi. The question posed by the Roman ambassadors goes unrecorded, but the oracle responded with what was probably already a safe prediction: "The Roman people will soon have a victory much greater than that from whose spoils you have brought gifts." This was taken as confirmation of Scipio's desire to operate in Africa.
- Livy 27.6.19: ex multaticio argento signa aenea ad Cereris dedere et ludos pro temporis eius copia magnifici apparatus fecerunt. Unless otherwise noted, dates, offices, and citations of ancient sources from T.R.S. Broughton, The Magistrates of the Roman Republic (American Philological Association, 1951, 1986), vol. 1, pp. 279, 297 and 304.
- Livy 27.43.12.
- English translation by Aubrey de Sélincourt, Livy: The War With Hannibal (Penguin Books, 1965, 1972), p. 486 online.
- Scipio had not earned his cognomen Africanus yet, but this is the name by which he is best known to history.
- Serge Lancel, Hannibal (Blackwell, 1999, from the French edition of 1995), p. 147.
- Livy 28.45.12: Tulerunt coronam aureaum ducentum pondo et simulacra spoliorum ex mille pondo argenti facta.
- Livy 29.10: ciuitatem eo tempore repens religio inuaserat ("A sudden religiosity invaded the citizenry at that time").
- Joseph Eddy Fontenrose, The Delphic Oracle, Its Responses and Operations, with a Catalogue of Responses (University of California Press, 1978), p. 345, noting that Livy's source may be the historian Fabius Pictor.