site | site # (info) | collection date | kind | depth | substrate | salin | comments | reference | |
---|---|---|---|---|---|---|---|---|---|
A | Woods Hole,Cape Cod, Massachusetts, USA | 223 map | 1964 or earlier | Bush LF (1964): 33, 34 | |||||
B | Rhosneigr (Rhosneigir), Anglesey, North Wales, United Kingdom | 1869 map | 1958-1961 | medium shell gravel | rare in lagoon at LWN. | Boaden PJS (1963): 84 | |||
C | Cemaes Bay (Cemmaes), Anglesey, North Wales, United Kingdom | 1871 map | 1958-1961 | fine sand | occasional at MTL. | Boaden PJS (1963): 84 |