| Nominal Species (n = 21) | Present allocation (n = 20) | Ref. |
|---|---|---|
| Ercolania coerulea Trinchese, 1893 | Ercolania coerulea | 19 |
| Ercolania costai Pruvot-Fol, 1951 | Ercolania coerulea | 1667 |
| Placida daguilarensis Jensen, 1990 | Placida daguilarensis | 3477 |
| Hermaea dendritica Alder & Hancock, 1843 | Placida dendritica | 7727 |
| Limapontia depressa Alder & Hancock, 1862 | Limapontia depressa | 19 |
| Calliopaea fuscata Gould, 1870 | Ercolania fuscata | 83435 |
| Alderiopsis garfio Caballer, Ortea & Espinosa, 2006 | Alderiopsis garfio | 83435 |
| Ercolania kencolesi Grzymbowski, Stemmer & Wägele, 2007 | Ercolania kencolesi | 3477 |
| Placida kevinleei McCarthy, Krug & Á. Valdés, 2017 | Placida kevinleei | 3477 |
| Ercolania lozanoi Ortea, 1981 | Ercolania lozanoi | 3477 |
| Ercolania margaritae Burn, 1974 | Ercolania margaritae | 7727 |
| Stiliger niger Lemche, 1935 | Ercolania nigra | 19 |
| Limapontia nigra Müller, 1773 | Limapontia nigra | 19 |
| Sacoproteus nishae Krug, Wong, M. R. Medina, Gosliner & Á. Valdés, 2018 | Sacoproteus nishae | 3477 |
| Stiliger smaragdinus Baba, 1949 | Sacoproteus smaragdinus | 3477 |
| Placida sudamericana Cetra, Gutiérrez Gregoric & Roche, 2021 | Placida sudamericana | 3477 |
| Stiliger talis Marcus & Marcus, 1956 | Stiliger talis | 83435 |
| Stiliger tentaculatus Eliot, 1917 | Ercolania tentaculata | 3477 |
| Ercolania translucens Jensen, 1993 | Ercolania translucens | 3477 |
| Placida verticilata Ortea, 1981 | Placida verticilata | 83435 |
| Niobe zonata Girard, 1852 | Limapontia zonata | 1667 |