The Collaborative International Dictionary of English v.0.48:

Primitia \Pri*mi"ti*a\, n.; pl. Primiti[ae](Primitias,
   obs.). [L. primitiae, pl., fr. primus first. Cf. Premices.]
   (Eng. Law)
   The first fruit; the first year's whole profit of an
   ecclesiastical preferment.
   [1913 Webster]

         The primitias of your parsonage.         --Spenser.
   [1913 Webster]