| Amphiscolops sp. 1 Yamasu & Okazaki, 1987 | prior to 1987 | | | southern area of Okinawa Island. |
| Amphiscolops sp. 2 Yamasu & Okazaki, 1987 | prior to 1987 | | | southern area of Okinawa Island. |
| Amphiscolops sp. 3 Yamasu & Okazaki, 1987 | prior to 1987 | | | southern area of Okinawa Island. |
| Amphiscolops sp. 5 Yamasu & Okazaki, 1987 | prior to 1987 | | | southern area of Okinawa Island. |
| Convoluta sp. 1 Yamasu & Okazaki, 1987 | prior to 1987 | | | southern area of Okinawa Island. |
| Convoluta sp. 2 Yamasu & Okazaki, 1987 | prior to 1987 | | | southern area of Okinawa Island. |
| Convoluta sp. 3 Yamasu & Okazaki, 1987 | prior to 1987 | | | southern area of Okinawa Island. |
| Pseudaphanostoma sp. Yamasu & Okazaki, 1987 | prior to 1987 | | | southern area of Okinawa Island. |
| Pseudaphanostoma sp. Yamasu & Okazaki, 1987 | prior to 1987 | | | southern area of Okinawa Island. |
| Haplogonaria sp. 1 Yamasu & Okazaki, 1987 | prior to 1987 | | | southern area of Okinawa Island. |
| Paedomecynostomum sp. Yamasu & Okazaki, 1987 | prior to 1987 | | | southern area of Okinawa Island. |
| Eumecynostomum bathycolum (Westblad, 1948) | prior to 1987 | | | southern area of Okinawa Island. |
| Otocelis westbladi Ax, 1959 | prior to 1987 | | | southern area of Okinawa Island. |