ancillary administration

from The Century Dictionary.

• in law, a local and subordinate administration of such part of the assets of a decedent as are found within a state other than that of his domicile, and which the law of the state where they are found requires to be collected under its authority in order that they may be applied first to satisfy the claims of its own citizens, instead of requiring the latter to resort to the jurisdiction of principal administration to obtain payment; the surplus, after satisfying such claims, being remitted to the place of principal administration.

from the GNU version of the Collaborative International Dictionary of English.

• (Law) An administration subordinate to, and in aid of, the primary or principal administration of an estate.