| Latocestus atlanticus Plehn, 1896 | prior to 1896 |  |  |  | 
| Traunfelsia elongata Laidlaw, 1906 | prior to 1906 |  |  | From sandy shore among weeds. | 
| Latocestus atlanticus Plehn, 1896 | 1896 or earlier |  |  |  | 
| Latocestus plehni Laidlaw, 1906 | 1904 |  |  | Several specimens found in deep crevices of nullipore, or shells, never in the open. | 
| Latocestus plehni Laidlaw, 1906 | 1904 |  |  |  | 
| Leptoplana graffii Laidlaw, 1906 | 1904 | 9-18 m |  | Found amongst nodules of nullipores dredged in from 5-10 fathoms. | 
| Stylochus neapolitanus (Delle Chiaje, 1841) | Jul 30, 1904 |  |  | from the bottoms of lighters; in crevices of compound ascidians; or in empty lamellibrach shells.  2 specimens. | 
| Stylochus neapolitanus (Delle Chiaje, 1841) | Aug 8, 1904 |  |  | from the bottoms of lighters; in crevices of compound ascidians; or in empty lamellibrach shells.  3 specimens. | 
| Prostheceraeus rubropunctatus Lang, 1884 | 1904 |  |  | from the bottoms of lighters, along with Stylochus.  Four specimens, one of them very young. | 
| Archilina regisfilia Curini-Galletti, 2019 | 2019 or earlier |  |  |  |