| site | site # (info) | collection date | kind | depth | substrate | salin | comments | reference | |
|---|---|---|---|---|---|---|---|---|---|
| A | Griffith Head (Griifth's Head), Reid State Park, Maine, USA | 4360 | Jan 7, 1976 | type locality | intertidal zone. | Dean HK (1980): 5 | |||
| B | Phillips Beach, Swampscott, Massachusetts, USA | 4406 | Jul 1972 | sandy gravel | intertidal zone. Phillips Beach, specimens provided by Dr. Tor G. Karling. | Dean HK (1980): 5 |