Inscription Found on a Pillar

"On one side of the pillar was an inscription, of which I took a note:

DEVOMNODENT--i-- FLA--v--IVSSENILISPOSSV--it-- PROPTERNVP--tia --qua--SVIDITSVBVMB--ra--

'To the great god Nodens (the god of the Great Deep or Abyss) Flavius Senilis has erected this pillar on account of the marriage which he saw beneath the shade.' " Chapter VIII, The Fragments, The Great God Pan, Arthur Machen