PEREMPTORY PLEAS. A per emptory plea, or plea in bar of the action, shows some ground for barring or defeating the alleged cause of action. Its prayer is that the plaintiff may be barred from further pursuing his said action. The plea may either traverse (deny) the matter of the declaration, or it may confess (admit its allegations of fact) and. avoid it, by showing other facts which excuse the de fendant, and deprive his alleged acts of wrongfulness. Pleas in bar are thus divided into: 1. Pleas by way of confession and avoidance. 2. Pleas by way of traverse.