map| site | site # (info) | collection date | kind | depth | substrate | salin | comments | reference | |
|---|---|---|---|---|---|---|---|---|---|
| A | West flatt (Westwatt, Westwattes), Helgoland Island, Germany | 664map | Apr 1963 | type locality | 1-2 m below mean low tide line | pebbly substrate of rock scour | museum specimen number: SMF 3122-35 | Dorjes J (1968): 206; also biogeography and ecology on this and other German Bay species in (citation)- 78-115. |