| Species | Name Used |
|---|---|
| Conocyema polymorpha van Beneden, 1882 | Conocyema polymorpha (p. 231 ) |
| Dicyema paradoxum von Kölliker, 1849 | Dicyema paradoxum (p. 230 ) |
| Dicyema truncatum Whitman, 1883 | Dicyema truncatum (p. 233 ) |
| Dicyemennea abelis McConnaughey, 1949 | Dicyemennea abelis (p. 235 ) |
| Dicyemennea californica McConnaughey, 1941 | Dicyemennea californica (p. 235 ) |
| Dicyemennea granularis McConnaughey, 1941 | Dicyemennea granularis (p. 238 ) |
| Microcyema vespa van Beneden, 1882 | Microcyema vespa (p. 231 ) |