| Scientific Name | Author | English Name |
|---|---|---|
| Dumus areniferus | Brewin, 1952 | |
| Dumus dumosus | (Monniot, 1987) | |
| Ritterella aequalisiphonis | (Ritter & Forsyth, 1917) | Sandy lobed sea squirt |
| Ritterella arenosa | (Brewin, 1950) | |
| Ritterella asymmetrica | Millar, 1966 | |
| Ritterella chetvergovi | Sanamyan & Sanamyan, 2002 | |
| Ritterella circularis | Monniot, 1987 | |
| Ritterella compacta | Kott, 1992 | |
| Ritterella cornuta | Kott, 1992 | |
| Ritterella dispar | Kott, 1957 | Dispar ascidian |
| Ritterella folium | Monniot & Monniot, 1991 | |
| Ritterella glareosa | Monniot, 1975 | |
| Ritterella iturupica | Beniaminson, 1974 | |
| Ritterella mirifica | Monniot & Monniot, 1983 | |
| Ritterella multistigmata | Kott, 1992 | |
| Ritterella papillata | Kott, 1992 | |
| Ritterella pedunculata | (Herdman, 1891) | |
| Ritterella prolifera | (Oka, 1933) | |
| Ritterella pulchra | (Ritter, 1901) | Orange compound tunicate |
| Ritterella rete | Monniot & Monniot, 1991 | |
| Ritterella rubra | Abbott & Trason,1968 | |
| Ritterella sigillinoides | (Brewin, 1958) | |
| Ritterella solida | Monniot, 2001 | |
| Ritterella tamarae | Sanamyan, 1998 | |
| Ritterella tokioka | Kott, 1992 | |
| Ritterella vestita | Millar, 1960 | |
| Ritterella yamazii | Tokioka, 1949 |