Taxa included

Muchmore, W.B. (1997d). On the status of four old species of pseudoscorpions from Puerto Rico and the Virgin Islands (Pseudoscorpionida: Olpiidae, Chernetidae, Withiidae). Caribbean Journal of Science 33: 269–280.

Taxon
Aphelolpium longidigitatum (Ellingsen, 1910) (Pseudoscorpiones: Hesperolpiidae) 270–273, figs 1–6, Aphelolpium longidigitatum (Ellingsen)
Novohorus incertus (Beier, 1931) (Pseudoscorpiones: Olpiidae) 273–275, figs 7–11, Novohorus incertus (Beier)
Dinocheirus altimanus (Ellingsen, 1910) (Pseudoscorpiones: Chernetidae) 275–278, figs 12–21, Dinocheirus altimanus (Ellingsen)
Novohorus suffuscus Hoff, 1945 (Pseudoscorpiones: Olpiidae) 275, Novohorus suffuscus
Dolichowithius simplex Beier, 1932 (Pseudoscorpiones: Withiidae) 278–279, figs 22–25, Dolichowithius simplex
Dolichowithius canestrinii (Balzan, 1887) (Pseudoscorpiones: Withiidae) 279, Dolichowithius canestrinii (Balzan)