Itaspiella helgolandica (Meixner, 1938) | Aug-Sep 1984 | | medium-coarse sand, boulders | Marine to brackish. |
Notocaryoplanella glandulosa (Ax, 1951) | Aug-Sep 1984 | | coarse sand, boulders | poor in detritus. |
Promesostoma cochleare Karling, 1935 | Aug-Sep 1984 | | medium-coarse sand | inner side of the Elmtree River estuary. |
Ptychopera spinifera den Hartog, 1966 | Aug-Sep 1984 | | | Elmtree River. Salt marsh with Spartina and Salicornia species. |
Acrorhynchides robustus (Karling, 1931) | Aug-Sep 1984 | | medium sand | Elmtree River. Medium sand rich in detritus. |
Placorhynchus dimorphis Karling, 1947 | Aug-Sep 1984 | | | Salt marsh sediment with Spartina and Salicornia species. |
Baltoplana magna Karling, 1949 | Aug-Sep 1984 | | medium-coarse sand | inner part of the Elmtree River. |
Vejdovskya pellucida (Schultze, 1851) | Aug-Sep, 1984 | | medium-coarse sand | inner part of the Elmtree River. Medium to coarse sand, very low salinity |