Definition
In Roman and civil law, the actio depositi was the action available to a depositor to recover property that had been delivered to another person for safekeeping (depositum) and was not returned upon demand. The action lay against the depositary — the party who received the item — when that person failed to return the thing deposited or misappropriated it. Because the relationship of deposit was grounded in good faith and personal trust, the action was classified as a bona fidei action (actio bonae fidei), meaning the court's inquiry extended beyond the literal terms of any agreement to encompass the broader obligations of honesty and fair dealing between the parties.
The action had two recognized directions in classical Roman procedure. The actio depositi directa ran in favor of the depositor against the depositary. The actio depositi contraria ran in favor of the depositary against the depositor for any extraordinary expenses incurred in maintaining or preserving the deposited property.
Why It Matters in Research
This term belongs to the Latin action vocabulary of Roman civil law and appears predominantly in sources drawing on the Corpus Juris Civilis — particularly the Digest and the Code of Justinian. Researchers encountering it in English-language legal materials will find it most often in treatises on civil law, equity, and the law of bailment, where civilian doctrines were absorbed or contrasted with common law principles.
The critical research trap is conflation with modern bailment law. Common law developed its own action for failure to return bailed goods — largely through trover and detinue — without directly adopting the actio depositi as a formal cause of action. When a 19th-century treatise writer invokes the actio depositi, they are typically drawing on civilian doctrine to explain the theoretical underpinnings of deposit obligations, not describing a live cause of action in an English or American court. The term functions as a conceptual bridge, not a pleading vehicle, in common law jurisdictions.
Researchers working in Louisiana, Quebec, Scottish, or other mixed or civilian jurisdictions will find the doctrine closer to operative law. Louisiana's Civil Code, for example, retains a substantive law of deposit with direct Roman roots, making the actio depositi more than historical background in that context.
The bona fidei classification is significant for historical research. It signals that courts applying civilian doctrine had discretion to award more than strict contractual damages — they could account for good faith expectations, incidental losses, and equitable considerations. This distinguishes deposit from stricti iuris contracts in Roman law and affects how commentators in the natural law and early equity traditions analyzed the obligations of depositaries.
Historical Dictionary Support
Burrill's Law Dictionary provides the core reference for this entry, identifying the action as one lying upon a deposit to recover the thing deposited, and citing the Digest (16.3) and the Code of Justinian (4.34) as primary sources. Burrill correctly flags the bona fidei classification with a specific Digest reference (16.3.23), which is a useful pointer for researchers consulting the primary civilian sources directly.
Burrill's treatment is brief and taxonomic, as expected of a 19th-century American law dictionary entry on a Roman law term. It does not distinguish the directa from the contraria form of the action, and it does not address how the doctrine was received (or not received) into common law systems. Researchers relying solely on Burrill will have the Latin anchor but will need civilian law sources — Pothier's treatise on obligations, Domat's civil law, or the institutional writers — for substantive doctrinal analysis.
No meaningful divergence exists among historical dictionaries on this term because its meaning was fixed by the primary Roman sources and was not a site of common law contestation.
Jurisdictional Note
The actio depositi has no independent existence as a cause of action in American common law jurisdictions; the functional equivalent is an action for breach of a bailment contract or conversion. In Louisiana and other civil law jurisdictions, the law of deposit retains structural Roman roots and the doctrine underlying the actio depositi remains analytically relevant.