Taxa included

Hoff, C.C. (1950b). Pseudoescorpionidos nuevos o poco conocidos de la Argentina (Arachnida, Pseudoscorpionida). Arthropoda, Buenos Aires 1: 225–237.

Taxon
Austrochthonius argentinae Hoff, 1950 (Pseudoscorpiones: Chthoniidae) 225–228, figs 1–6, Austrochthonius argentinae
Ephippiochthonius tetrachelatus (Preyssler, 1790) (Pseudoscorpiones: Chthoniidae) 228, Chthonius tetrachelatus (Preyssler)
Lechytia chthoniiformis (Balzan, 1887) (Pseudoscorpiones: Chthoniidae) 228–229, Lechytia chthoniiformis (Balzan)
Albiorix argentiniensis (Hoff, 1950) (Pseudoscorpiones: Ideoroncidae) 229–232, figs 7–9, Dinoroncus argentiniensis
Serianus minutus Hoff, 1950 (Pseudoscorpiones: Garypinidae) 233–237, figs 10–14 (junior secondary homonym of Serianus minutus (Banks)), Serianus minutus