Ewing, H.E. (1928). The legs and leg-bearing segments of some primitive arthropod groups, with notes on leg-segmentation in the Arachnida. Smithsonian Miscellaneous Collections 80(11): 1–41.
| Taxon | |
|---|---|
| Chelifer cancroides (Linnaeus, 1758) (Pseudoscorpiones: Cheliferidae) | n/a, fig. 6a, Chelifer cancroides (Linnaeus) |
| Neobisium (Neobisium) maritimum (Leach, 1817) (Pseudoscorpiones: Neobisiidae) | n/a, fig. 6b, Obisium maritimum |