“The busts of twenty most illustrious families were borne in the procession, with the names of Manlius, Quinctius, and others of equal rank. But Cassius and Brutus outshone them all, from the very fact that their likenesses were not to be seen.”
Viginti clarissimarum familiarum imagines antelatae sunt, Manlii, Quinctii aliaque eiusdem nobilitatis nomina. sed praefulgebant Cassius atque Brutus eo ipso quod effigies eorum non visebantur.
Book III, 76; Church-Brodribb translation
According to Lippincott's Monthly Magazine https://play.google.com/books/reader?id=P8pGAQAAMAAJ&printsec=frontcover&output=reader&hl=en&pg=GBS.PA872|:
This line is the origin of Lord John Russell's phrase "Conspicuous by its absence"; of which Russell said "It is not an original expression of mine, but is taken from one of the greatest historians of antiquity". Similar phrases also are found in the tragedy Tiberius of Joseph Chénier and in Les Hommes Illustres of Charles Perrault.
Annals (117)