|  | site | site # (info) | collection date | kind | depth | substrate | salin | comments | reference | 
| A | Prinzeninsel Kinali, Kinali Ada (Proti, Kinali Island), Sea of Marmara (Marmara Meer), Turkey | 472 
  map | Sep 29, 1956 |  |  |  |  |  | Ax P (1959): 70 | 
| B | Island of São Sebastião (Ilha de Sebastiao), Brazil | 60 
  map | Nov 1949 | type locality | below low water line | coarse sand with tufts of Padina and other algae |  |  | Marcus Er (1951): 31, 113 | 
| C | Muggia Bay (Baia di Muggia, Miljski Zatok, Miljski Zaliv, Muggio), near Trieste, Italy | 1182 
  map | Aug 1879 | type locality |  |  |  | 2 specimens between sea plants. | Graff Lvon (1882): 406 | 
| D | St. George's West, Biological Station swimming place, Bermuda Islands, Bermuda | 2054 
  map | Sep 24-30, 1975 |  |  |  |  | small tide-pools with Cymopolia. | Karling TG (1978): 226 | 
| E | Coconut Island, Oahu, Hawaii, USA | 2057 
  map | April 15-21 , 1969 |  | intertidal | in coral blocks, sand, stones |  | abundant | Karling TG, Mack-Fira V, Doerjes J (1972): 253 | 
| F | Sevastopol (Sebastopol, Sewastopol, Akhiar, Akhtyar), Black Sea, Ukraine. | 203 
  map | 1913 or earlier |  |  |  |  | in mantle of Mytilus. | Graff Lvon (1913): 416 | 
| G | Ancona, Italy | 265 
  map | 1913 or earlier |  |  |  |  | also with Plagiostomum girardi. | Graff Lvon (1913): 416 | 
| H | Lesina, Italy | 263 
  map | 1913 or earlier |  |  |  |  | also with Plagiostomum girardi. | Graff Lvon (1913): 416 | 
| I | Wembury Bay, United Kingdom | 1329 
  map | Jul 8, 1949 |  | tide pool |  |  |  | Westblad E (1955): 504 | 
| J | Salcombe Harbour, United Kingdom | 2846 
  map | Jul 11, 1949 |  |  |  |  | Fucus seaweed. | Westblad E (1955): 504 | 
| K | White Gulch, Tomales Bay, California, USA | 4087 
  map | Aug 24, 1960 |  |  |  |  | floating kelp. | Karling TG (1962): 187 | 
| L | Gulf of Trieste (Trzaski Zaliv, Trscanski Zaliv, Trst), Istra, Adriatic Sea, Italy | 1147 
  map | 1908 |  |  |  |  | Im Februar dieses Jahres erhielt ich durch die Liebenswürdigkeit Herrn Prof. Dr. L. Böhmigs zwei Exemplare oben genannter Form, die im Hafen  on Triest erbeutet worden waren. | Ritter-Zahony R von (1908): 10 |