map| site | site # (info) | collection date | kind | depth | substrate | salin | comments | reference | |
|---|---|---|---|---|---|---|---|---|---|
| A | north harbor (Nordhafen), Helgoland Island, Germany | 668map | May 1963 | type locality | 32-33 m | coarse sand | museum specimen number: SMF 3224 | Dorjes J (1968): 282; also biogeography and ecology on this and other German Bay species in (citation)- 78-115. |