Jackson, A.R. (1910). On some arthropods observed in 1909. Lancashire Naturalist (new series) 3: 17–22, 46–51.
| Taxon | |
|---|---|
| Chthonius orthodactylus (Leach, 1817) (Pseudoscorpiones: Chthoniidae) | 50, Chthonius orthodactylus (Leach) |
| Chthonius tenuis L. Koch, 1873 (Pseudoscorpiones: Chthoniidae) | 50, Chthonius tenuis |
| Roncocreagris cambridgii (L. Koch, 1873) (Pseudoscorpiones: Neobisiidae) | 50, Ideoroncus cambridgii (L. Koch) |
| Chthonius rayi L. Koch, 1873 (Pseudoscorpiones: Chthoniidae) | 50, (as Chthonius rayii), Chthonius rayi |
| Obisium muscorum Leach, 1817 (Pseudoscorpiones: Cheliferidae) | 50, Obisium muscorum |