Taxa included

Morikawa, K. (1954b). On some pseudoscorpions in Japanese lime-grottoes. Memoirs of Ehime University (2B) 2: 79–87.

Taxon
Allochthonius (Urochthonius) ishikawai Morikawa, 1954 (Pseudoscorpiones: Pseudotyrannochthoniidae) 80–82, figs 1a–c, 2, Allochthonius (Urochthonius) ishikawai
Allochthonius (Urochthonius) ishikawai shiragatakiensis Morikawa, 1954 (Pseudoscorpiones: Pseudotyrannochthoniidae) 82–83, fig. 1d, Allochthonius (Urochthonius) ishikawai shiragatakiensis
Allochthonius (Urochthonius) ishikawai uyamadensis Morikawa, 1954 (Pseudoscorpiones: Pseudotyrannochthoniidae) 83, fig. 1e, Allochthonius (Urochthonius) uyamadensis
Spelaeochthonius Morikawa, 1954 (Pseudoscorpiones: Pseudotyrannochthoniidae) 83–84, Spelaeochthonius
Spelaeochthonius kubotai Morikawa, 1954 (Pseudoscorpiones: Pseudotyrannochthoniidae) 84, figs 1f-i, Spelaeochthonius kubotai
Megachernes ryugadensis Morikawa, 1954 (Pseudoscorpiones: Chernetidae) 84–86, figs 3a–c, 4, Megachernes ryugadensis