Bristowe, W.S. (1931e). The spiders of the island of Grassholm, and some additions to the Skomer Island list (South Wales). Proceedings of the Zoological Society of London 1931: 111–113.
| Taxon | |
|---|---|
| Chthonius rayi L. Koch, 1873 (Pseudoscorpiones: Chthoniidae) | 113, (as Chthonius rayii), Chthonius rayi |