Canticum Graduivm.
From BiblePortal Wikipedia
Canticum Graduivm. [1]
The Gradual Psalms were sometimes so called. They were recited in the following order: the first five, with "Repose eternal," etc., and followed by a few versicles; were said "for the dead". The next ten, each with "Gloria;" five" for the congregation," and five "for households;" each group being followed by a few versicles and collect.
