The Western Empire experiences the rise of the Gallic and Roman liturgical families and we see the first mentions of the importance of the Words of Institution in Western Eucharistic theology. Emperor Theodosius constructs the Basilica of Saint Paul Outside the Walls.
Links:
Photo of the Basilica of Saint Paul Outside the Walls
Gallic Liturgy
Latin text including Gallic Mass
Ambrosian Liturgy
Text of the Liturgy in English
Resources on the Ambrosian Liturgy
Roman Liturgy
De Sacramentis
Article on the Epiclesis
Minor Basilicas mentions in the episode
Sant’Anastasia al Palatino
San Clemente al Laterano
San Lorenzo in Damaso
Santi Nereo e Achilleo
Santa Pudenziana
Daniel Callam, CSB. “The Frequency of Mass in the Latin Church ca. 400”, Theological Studies. 45. 1984.
Check out the other great Catholic podcasts at the Starquest Production Network
To listen, just click on the link below:
#392 – A History of the Catholic Church – Liturgies in the West
catholicunderthehood.com 
