ACTIO NON, pleading. After stating the appearance and defence, special pleas
begin with this allegation, "that the said plaintiff ought not to have or
maintain his aforesaid action thereof against him," actio non habere debet.
This is technically termed the actio non. 1 Ch. Plead. 531 2 Ch. Plead.
421; Steph. Plead. 394.