Syme, The Augustan Aristocracy, p. 244 online. Linderski asserted that the official form of his name is unknown because the Fasti Consulares for 52 BC are lost; see "The Dramatic Date of Varro, De re rustica, Book III and the Elections in 54," Historia 34 (1985), p. 251, note 21. Linderski later amplified his view Scipio's nomenclature in the Imperium sine fine essay.
Syme, The Augustan Aristocracy, p. 244, note 6, citing D.R. Shackleton Bailey, Two Studies in Roman Nomenclature (1976), p. 98 ff. (see also for discussion of Metellus Scipio's names). Tribunate rejected and patrician status affirmed most emphatically by Linderski, "Q. Scipio Imperator," p. 149 ff. online. Scipio was an interrex; patrician rank was a prerequisite for the office.
Caesar, De Bello Civili, i. 5; William W. Batstone and Cynthia Damon, Caesar's Civil War, Oxford University Press, (2006), p. 109 online.
See also the remarks of Syme, The Augustan Aristocracy, p. 245 online.
Dates and offices from T.R.S. Broughton, The Magistrates of the Roman Republic, vol. II, pp. 171, 172 (note 4), 189, 201, 207 (note 1), 215, 229, 260–261, 275, 288, 297, 540; vol. III (1986), pp. 41–42 (where Broughton recants his earlier identification of Scipio as a tribune, and discusses at some length the scholarly debate on evidence pertaining to whether he was tribune and when he was aedile). Primary sources on Metellus's magistracies include Cicero, Epistulae ad Atticum, ii. 1, and In Vatinium 16; and Valerius Maximus ix. 1. § 8. Additional evidence for his interregnum, CILII, 2663c, dated Ides of June; see also Cicero, Epistulae ad Familiares, vii. 11, and Münzer, Hermes, vol. 71 (1936) 222 ff. (1936).
Valerius Maximus 9.1.8: "Just as notorious was that party arranged for Metellus Scipio when he was consul and for the people's tribunes — by Gemellus, their tribunicial errand boy. He was a free man by birth, but twisted by his business to play the servant's role. Society gave a collective blush: he established a whorehouse in his own house, and pimped out Mucia and Flavia, each of them notable for her father and husband, along with the aristocratic boy Saturninus. Bodies in shameless submission, ready to come for a game of drunken sex! A banquet not for honoring consul and tribunes, but indicting them!" Latin text available at The Latin Libraryonline.
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Jerzy Linderski, "Q. Scipio Imperator," in Imperium sine fine: T. Robert S. Broughton and the Roman Republic (Franz Steiner, 1996), pp. 148–149. The adoption is recorded by Cassius Dio, lx. 51, where he is referred to as "Quintus Scipio"; for the passage, see Bill Thayer's edition at LacusCurtiusonline.
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A translation that draws on Scipio's usual superbia over the sprezzatura supposedly demonstrated here might be "The Imperator conducts himself well."