EXECUTIO NON. These words occur in the stat. 13 Ed. I. cap. 45, in the following connexion: Et...precipiatur vice comiti quod scire faciat parti... quod sit ad certum diem ostensura si quid sciat dicere quare hujustnodi irrotulata vel in fine contenta executionem habere non debeant. This statute is the origin of the scire facias post annum et diem quare executionem non, etc. To a plea in bar to such a writ, the defendant should conclude that the plaintiff ought not to have or maintain his aforesaid execution thereof against him, which is called the executio non, as in other cases by actio non. (q. v.) 10 Mod. 112; Yelv. 218.