Taxa included

Hoff, C.C. (1963a). Pseudoscorpions from the Black Hills of South Dakota. American Museum Novitates 2134: 1–10.

Taxon
Mundochthonius rossi Hoff, 1949 (Pseudoscorpiones: Chthoniidae) 1–2, Mundochthonius rossi
Mundochthonius pacificus (Banks, 1893) (Pseudoscorpiones: Chthoniidae) 2, (misidentification; see Lechytia hoffi), Lechytia pacifica (Banks)
Lechytia hoffi Muchmore, 1975 (Pseudoscorpiones: Chthoniidae) 2, (misidentification), Lechytia pacifica (Banks)
Microbisium confusum Hoff, 1946 (Pseudoscorpiones: Neobisiidae) 2–3, Microbisium confusum
Chernes ewingi (Hoff, 1949) (Pseudoscorpiones: Chernetidae) 3, Hesperochernes ewingi (Hoff)
Chernes amoenus (Hoff, 1963) (Pseudoscorpiones: Chernetidae) 3–10, figs 1–2, Hesperochernes amoenus
Parachelifer persimilis (Banks, 1909) (Pseudoscorpiones: Cheliferidae) 10, Parachelifer persimilis (Banks)
Parachelifer scabriculus (Simon, 1878) (Pseudoscorpiones: Cheliferidae) 10, Parachelifer scabriculus (Simon)