Taxa included

Gabbutt, P.D. (1969b). Chelal growth in pseudoscorpions. Journal of Zoology, London 157: 413–427.

Taxon
Roncocreagris cambridgei (L. Koch, 1873) (Pseudoscorpiones: Neobisiidae) 414–427, Microcreagris cambridgei (L. Koch)
Neobisium (Neobisium) carpenteri (Kew, 1910) (Pseudoscorpiones: Neobisiidae) 414–427, Neobisium carpenteri (Kew)
Neobisium (Neobisium) maritimum (Leach, 1817) (Pseudoscorpiones: Neobisiidae) 414–427, figs 1–2, 3a–h, Neobisium maritimum (Leach)
Obisium muscorum Leach, 1817 (Pseudoscorpiones: Cheliferidae) 414–427, Neobisium muscorum (Leach)
Roncus lubricus L. Koch, 1873 (Pseudoscorpiones: Neobisiidae) 414–427, Roncus lubricus