| site | site # (info) | collection date | kind | depth | substrate | salin | comments | reference | |
|---|---|---|---|---|---|---|---|---|---|
| A | Woods Hole,Cape Cod, Massachusetts, USA | 223 | between May and Aug 1907 | type locality | Grass Island | Graff Lvon (1911): 397 | |||
| B | Little Harbor, by Woods Hole, Massachusetts, USA | 1187 | between May and Aug 1907 | type locality | in Ulven (Ulva) | Graff Lvon (1911): 397 | |||
| C | Lafayette River, Norfolk, Virginia, USA | 1880 | 1948 or earlier | shallow | brackish | from collection records ranging 1931 thru 1948. from shallows of river. | Ferguson FF, Jones ER (1949): 436, 439 |