Taxa included

Morikawa, K. (1956). Cave pseudoscorpions of Japan (I). Memoirs of Ehime University (2B) 2: 271–282.

Taxon
Spelaeochthonius undecimclavatus Morikawa, 1956 (Pseudoscorpiones: Pseudotyrannochthoniidae) 272–274, figs 2a, 3a, 3e, Spelaeochthonius undecimclavatus
Spelaeochthonius kobayashii Morikawa, 1956 (Pseudoscorpiones: Pseudotyrannochthoniidae) 274–275, figs 2b, 3b, Spelaeochthonius kobayashii
Spelaeochthonius dorogawaensis Morikawa, 1956 (Pseudoscorpiones: Pseudotyrannochthoniidae) 275–276, figs 2c, 3c, Spelaeochthonius kobayashii dorogawaensis
Spelaeochthonius akiyoshiensis Morikawa, 1956 (Pseudoscorpiones: Pseudotyrannochthoniidae) 276–277, fig. 3d, Spelaeochthonius kobayashii akiyoshiensis
Allochthonius (Urochthonius) ishikawai uenoi Morikawa, 1956 (Pseudoscorpiones: Pseudotyrannochthoniidae) 277, figs 2e, 4a (as Allochthonius (Urochthonius) uénoi), Allochthonius (Urochthonius) uenoi
Allochthonius (Urochthonius) ishikawai deciclavatus Morikawa, 1956 (Pseudoscorpiones: Pseudotyrannochthoniidae) 277–279, fig. 4b, Allochthonius (Urochthonius) deciclavatus
Allochthonius (Urochthonius) biocularis Morikawa, 1956 (Pseudoscorpiones: Pseudotyrannochthoniidae) 279–280, fig. 4e, Allochthonius (Urochthonius) biocularis
Allochthonius (Allochthonius) opticus troglophilus Morikawa, 1956 (Pseudoscorpiones: Pseudotyrannochthoniidae) 280–281, fig. 4f, Allochthonius (Allochthonius) troglophilus
Mundochthonius japonicus tripartitus Morikawa, 1956 (Pseudoscorpiones: Chthoniidae) 281–282, figs 2f, 4h, Mundochthonius tripartitus
Allochthonius (Allochthonius) opticus takasawadoensis Morikawa, 1956 (Pseudoscorpiones: Pseudotyrannochthoniidae) 281, fig. 4g (synonymised by Morikawa, 1960: 100), Allochthonius (Allochthonius) opticus takasawadoensis
Mundochthonius japonicus imadatei Morikawa, 1956 (Pseudoscorpiones: Chthoniidae) 282, fig. 4i, Mundochthonius imadatei