per and cu

from Bouvier's Law Dictionary, Revised 6th Ed (1856)
PER AND CUI. When a writ of entry is brought against a second alienee or 
descendant from the disseisor, it is said to be in the per and cui, because 
the form of the writ is that the tenant had not entry but by and under a 
prior alienee, to whom the intruder himself demised it. 2 Bl. Com. 181. See 
Entry, writ of. 
    

[email protected]