Various scans and editions. You will need a djvu reader, like WinDjvu. You can download that from sourceforge.
Catena 3 part 1
Catena 1 part 2
Catena 1 part 2 (another scan)
Catena 4 part 2
Catena 2 (complete)
Catena 1
Catena 2
Catena 3
Catena 4
Catena 1 part 1 and 3
Catena 4
Catena 3
Catena 4
Catena Aurea
Catena 1
Catena 2
Catena 3
Catena 4
Aha, thank you.