Taxa included

Chamberlin, J.C. (1924c). Preliminary note upon the pseudoscorpions as a venomous order of the Arachnida. Entomological News 35: 205–209.

Taxon
Chelifer macrochelatus Tömösváry, 1884 (Pseudoscorpiones: Cheliferidae) n/a, fig. a, Chelanops macrochelatus (Tömösváry)
Novobisium carolinense (Banks, 1895) (Pseudoscorpiones: Neobisiidae) n/a, figs b–c (as Obisium carolinensis [sic]), Obisium carolinense