Taxa included

Lankester, E.R. (1904). The structure and classification of the Arachnida. Quarterly Journal of Microscopical Science (new series) 48: 165–269.

Taxon
Ricinoides karschii (Hansen and Sørensen, 1904) (Ricinulei: Ricinoididae) n/a, figs 73–76, Cryptostemma karschii