The manuscript is an Italian Psalter and Hymnarium from the late 14th century. An hymnarium is a liturgical book that contains hymns and is a fixed part of the liturgy. This manuscript is also probably Benedictine.
The Benedictine Psalter, with noted Anthems and Hymns, and Chapters with their Versicles and Responds, are arranged in the following order:
Mondays, Tuesdays and Wednesdays at Prime; Matins and Lauds for the whole week start on f.1r.
Canticles from the Commune Sanctorum with various Anthems for feasts of Apostles, Evangelists, Martyrs, Confessors, and Virgins, and for use between Easter and Pentecost start on f.141r.
Short Lessons with Responses for use from Easter to Pentecost; and within the Octaves of Pentecost, Corpus Christi, Saint John the Baptist, Saints Peter and Paul, Assumption and Nativity start on f.146r.
Grail of Easter Day starts on f.147v. In this section, a part beginning Hec dies has been inserted at a later date.
Sundays at Prime, Terce, Sext, None; Mondays and Tuesdays at Terce, Sext, and None; Regina Coeli; and Evensong start on f.149r.
Compline; Nunc Dimittis; Gloria; and Credo start on f.192v.
The Litany starts on f.197r.
The Agenda Mortuorum starts on f.201v.
The Hymns for the Year beginning in Advent start on f.207r.
The Commemorationes Communes start on f.243r. This section is incomplete.
Good, large, uniform, Italian Gothic hand.
Besides penwork initials, there are a number of large floriated initials in the Psalter, the colours being blue, green, vermilion, yellow, and lake on square backgrounds of burnished gold with branching foliage, gold roundels and, sometimes, a bird in the margin. The 'B' of Beatus vir (f.1r) resembles these in colouring, but contains in the upper compartment a figure of Christ, and in the lower a figure of David. There is also a figure of Christ in an initial on f.169 and an angel in an initial on f.172v.