The Worm Ouroboros

From Author Wars - https://authorwars.com/publications/the-worm-ouroboros-291621.html

Overview:

Title: The Worm Ouroboros
Author: E. R. Eddison
Year: 1976
ISBN-10: 0345254759
Publisher: Ballantine Books
Price: $1.95
Pages: xxii+520
Binding: Paperback
Type: Novel
Title Reference: The Worm Ouroboros
Notes: Stated 9th U.S. printing.
According to a note in the text, the introduction by James Stephens was written for an earlier (unnamed) edition.
Some websites give cover credit to "B. Reni" though no credit or signature is visible.