Kaburakia gloriosa Kato, 1938 | 1937 | | | collected by Mr. Baba under a stone at Oniike near Tomioka in spring 1937. |
Pseudostylochus obscurus (Stimpson, 1857) | June 1937 | | | Numerous specimens. |
Pseudoceros atropurpureus Kato, 1934 | June 1937 | | | Several specimens. The animal in this locality is more blackish violet on the dorsal surface, and uniformly distributed white dots are larger than those of the Susaki form. |
Prosthiostomum grande Stimpson, 1857 | Jun 1937 | | | two specimenms were collected at Oniike. |
Cryptophallus japonicus Kato, 1944 | 1944 or earlier | | | Oniike near Tomioka, Amakusa. A single specimen. |