His colleagues in the office were Titus Quinctius Capitolinus Barbatus, Quintus Quintius Cincinnatus, Gaius Julius Iulus, Lucius Furius Medullinus and Manius Aemilius Mamercinus; Manlius was the only newcomer to the imperium, as all of his colleagues were consulares, the college was also unique in that it was the first year there were six consular tribunes.
Diodorus has Mamilius instead of Manlius as consular tribune and only has the college consist of three members this year, which is believed to be a mistake by the ancient historian or by later transcribers.
There is some doubt among modern scholars in regards to the historicity of these consular colleges of six and there are indications of a higher degree of interpolation during this period.
There was much infighting between the consulars which would lead to the defeat of Sergius at Veii because his colleague Verginius refused him aid.
The embassy was to convey an offering to the Oracle of Delphi and to Apollo but was captured by Liparean pirates under the command of the sicilian Greek Timasitheus.
The pirates seems to have had a change of heart when they learned of the purpose of the embassy and the three consulares were released to continue their journey.