Taxa included

Tullgren, A. (1900a). Two new species of Chelonethi (Pseudoscorpions) from America. Entomologisk Tidskrift 21: 153–157.

Taxon
Atemnus floridanus Tullgren, 1900 (Pseudoscorpiones: Atemnidae) 153–155, plate 1 figs 1–4 (synonymised by Banks, 1904a: 141), Atemnus floridanus
Neochelanops patagonicus (Tullgren, 1900) (Pseudoscorpiones: Chernetidae) 155–157, plate 2 figs 1–5, Chelifer (Chelanops) patagonicus