Bristowe, W.S. (1934). The spiders of Ramsey and Bardsey Islands, with notes on others from Montgomery and Merioneth. Proceedings of the Zoological Society of London 1934: 1–9.
| Taxon | |
|---|---|
| Obisium muscorum Leach, 1817 (Pseudoscorpiones: Cheliferidae) | 8, Obisium muscorum |