actiones nominata

from Bouvier's Law Dictionary, Revised 6th Ed (1856)
ACTIONES NOMINATAE. Formerly the English courts of chancery would make no
writs when there was no precedent, and the cases for which there were
precedents were called actiones nominatoe. The statute of Westm. 2, c. 24,
gave chancery authority to form new writs in consimili casu.  Hence arose
the action on the case. Bac. Ab. Court of Chancery, A; 17, Serg. R. 195.
    

[email protected]