| Stenostomum | arevaloi | Gieysztor, 1931 | |
| Microdalyellia | beltrami | (Gieysztor, 1931) | |
| Dalyellia | beltrani | Gieysztor, 1931 | |
| Gieysztoria | beltrani | (Gieysztor, 1931) | |
| Macrostomum | catarractae | Gieysztor, 1938 | |
| Dalyellia | tatrica | czarnohorica | Gieysztor & Szynal, 1939 |
| Dalyelliidae | Dalyellia | Gieysztor, 1938 | |
| Dalyellia | penicilla | diminuta | Gieysztor, 1929 |
| Gieysztoria | euchroa | (Gieysztor, 1926) | |
| Dalyellia | euchroa | Gieysztor, 1926 | |
| Microdalyellia | euchroa | (Gieysztor, 1926) | |
| Pseudosyrtis | fluviatilis | (Gieysztor, 1938) | |
| Otoplana | fluviatilis | Gieysztor, 1938 | |
| Dalyelliidae | Fulinskiella | Gieysztor & Szynal, 1939 | |
| Macrostomum | gracile (2) | Gieysztor, 1931 | |
| (Castrada) | howerlana | Gieysztor & Szynal, 1939 | |
| Dalyellia | rubra | intermedia | Gieysztor, 1931 |
| Gieysztoria | rubra | intermedia | (Gieysztor, 1931) |
| Varsoviella | kozminskii | Gieysztor & Wiszniewski, 1947 | |
| Dalyelliidae | Microdalyellia | Gieysztor, 1938 | |
| Dalyellia | penicilla | minuta | Gieysztor, 1938 |
| (Castrada) | moroderi | Gieysztor, 1931 | |
| Lutheria | moroderi | (Gieysztor, 1931) | |
| Microdalyellia | brevimana | nasonovi | Gieysztor, 1938 |
| Dalyellia | karisalmica | oligochaeta | Gieysztor, 1938 |
| Dalyellia | (Scoparia) | Gieysztor, 1934 | |
| Dalyellia | sp. | Gieysztor, 1931 | |
| Dalyellia | karisalmica | tabulifera | Gieysztor, 1938 |
| Dalyellia | tatrica | Gieysztor, 1938 | |
| (Castrada) | torrenticola | Gieysztor & Szynal, 1939 | |
| Dalyellia | penicilla | typica | Gieysztor, 1934 |
| Dalyellia | rubra | typica | Gieysztor, 1931 |
| Gieysztoria | rubra | typica | (Gieysztor, 1931) |
| (Castradella) | variodentata | Gieysztor, 1929 | |
| Dalyelliidae | Varsoviella | Gieysztor & Wiszniewski, 1947 | |
| Gieysztoria | lugubris | wigrensis | (Gieysztor, 1938) |
| Microdalyellia | lugubris | wigrensis | Gieysztor, 1938 |
| Microdalyellia | wiszniewskii | Gieysztor, 1938 |
38 names, including those in new combination. (Max listing set to 900)