Taxa included

Bristowe, W.S. (1929d). The spiders of Lundy Island. Proceedings of the Zoological Society of London 1929: 235–244.

Taxon
Ephippiochthonius tetrachelatus (Preyssler, 1790) (Pseudoscorpiones: Chthoniidae) 244, Chthonius tetrachelatus (Preyssler)
Roncocreagris cambridgii (L. Koch, 1873) (Pseudoscorpiones: Neobisiidae) 244, Ideoroncus cambridgii (L. Koch)
Chthonius rayi L. Koch, 1873 (Pseudoscorpiones: Chthoniidae) 244, (as Chthonius rayii), Chthonius rayi