Taxa included

Beier, M. (1939b). The Pseudoscorpionidea collected by the Percy Sladen Trust Expedition to Lake Titicaca. Annals and Magazine of Natural History (11) 3: 288–290.

Serianus bolivianus (Beier, 1939) (Pseudoscorpiones: Garypinidae) 288–289, fig. 1, Paraserianus bolivianus
Paraserianus Beier, 1939 (Pseudoscorpiones: Garypinidae) 288, Paraserianus
Cordylochernes costaricensis Beier, 1932 (Pseudoscorpiones: Chernetidae) 289–290, Cordylochernes costaricensis
Parazaona bocki (Tullgren, 1907) (Pseudoscorpiones: Chernetidae) 290, Parazaona bocki (Tullgren)