| site | site # (info) | collection date | kind | depth | substrate | salin | comments | reference | |
|---|---|---|---|---|---|---|---|---|---|
| A | Kobe Bay, Japan | 1734 | prior to 1923 | type locality | 12-15 m | mud | Kobe Bay, Inland Sea of Japan. | Bock S (1923): ; from Prudhoe S (citation)- page 45 | |
| B | Kobe Bay, Japan | 1734 | 1944 or earlier | 12-15 m | Kobe Bay. Two specimens collected from 12-15 m in depth. | Kato K (1944): 261 |