Cf. Cic. in Quintil. Inst. Or. 6.3.96. (Broughton MRR II)
The list of senators in a dated inscription of this year (SIG(3) 747) provides good evidence for the names of a group of ex-magistrates, although it is not wholly conclusive because of the additions to the Senate by the reforms of Sulla. (Broughton MRR II)