The source you are referring to as "Sallust Augustus 27" is actually Suetonius, Life of Augustus 27. In this chapter, Suetonius quotes Augustus’s own lost autobiography regarding the suspicious disappearance of the praetor Quintus Gallius. [1, 2]

Here are the specific Greek and Latin terms used by the two historians to describe the claim that Gallius "disappeared" or "was never seen again" after being sent away:

1. The Greek Word (Appian, Civil Wars 3.95)

In The Civil Wars (Book 3, Chapter 95), Appian writes that Octavian ordered Gallius to be banished to the camp of his brother Marcus Gallius (who was serving under Mark Antony). Appian records that Gallius took a ship and was never seen again, using the Greek phrase: [1]

• οὐδαμοῦ ἔτι ὤφθη (oudamou eti ōphthē)

Literal translation: "He was nowhere seen again" (from the verb ὁράω, horaō, to see).

2. The Latin Words (Suetonius, Augustus 27.4)

In De Vita Caesarum (Augustus, 27.4), Suetonius contrasts the rumor that Octavian secretly executed Gallius with Augustus’s own official version of events. Suetonius notes that Augustus wrote in his memoirs that after Gallius was dismissed under sentence of banishment, he lost his life by either shipwreck or brigands. The Latin phrasing is: []

• vitam amisisse (or interisse)

Suetonius notes the two ways Augustus claimed Gallius died en route to his brother: []

• naufragio (by shipwreck)
• a latronibus (by bandits / brigands) [1]

Summary of Differences

While Appian emphasizes the physical mystery of his disappearance by writing that he "was seen nowhere again" (οὐδαμοῦ ἔτι ὤφθη), Suetonius (quoting Augustus directly) frames the disappearance as an unfortunate loss of life, stating he "lost his life" (vitam amisisse) due to natural hazards or crime while traveling. [, 2]

If you are tracking the textual history of Augustus’s memoirs, would you like to explore how Nicolaus of Damascus or other contemporary sources framed this specific event?