Provortex rubrobacillus Gamble, 1893 | 1893 or earlier | | | 'New Grounds' in the Channel. |
Umagilla forskalensis Wahl, 1909 | 1953 or earlier | | | gut of Holothuria forskalia. |
Fecampia erythrocephala Giard, 1886 | 1913 or earlier | | | |
Plagiostomum pseudomaculatum (Gamble, 1893) | 1893 or earlier | | | deep fauna. |
Allostoma pallidum Beneden, 1861 | Jul 26, 1949 | 4 m | | Plymouth River. |
Ulianinia mollissima Levinsen, 1879 | 1963 or earlier | | | Karling notes distribution of the species. Jenny Cliff Bay. |
Provortex balticus (Schultze, 1851) | 1893 or earlier | | | |
Macrostomum pusillum Ax, 1951 | 1974 or earler | | | |
Fecampia erythrocephala Giard, 1886 | 1894 or earlier | | | |
Monops fuscus (Ørsted, 1843) | Aug-Sep 1892 | | | Abundant among Balani, Ulva, and generally throughout the littoral zone. Monotus fuscus is here the characteristic form, although it ranges throughout the tidal zone. It appears to derive moisture from Balani into which it creeps during ebb-tide. |
Convoluta paradoxa Ørsted, 1843 | Aug-Sep 1892 | | | Widely distributed in the littoral zone; nowhere, however, very abundant, nor do the specimens attain the dimensions of Millport examples. |
Promesostoma solea (Schmidt, 1857) | Aug-Sep 1892 | | | Abundant in dredging from almost all localities. |
Enterostomum austriacum Graff, 1882 | Aug-Sep 1882 | | | Specimens referable to this species occurred commonly in the Sound at depths below 5 fathoms. |
Leptoplana droebachensis Ørsted, 1845 | 1883 or earlier | | | Recently, specimens from Plymouth Sound have reached me which agree in almost every particular with L. Droebachensis, Oe., as described by Jensen, and it appears probable that this species has hitherto been confused on our coasts with L. tremellaris. |
Prostheceraeus vittatus (Montagu, 1815) | 1883 or earlier | | | in the Sound (Mr. Garstang). |
Proporus venenosus (Schmidt, 1852) | 1905 or earlier | | | Kanal La Manche (Plymouth-Sund). |
Otocelis rubropunctata (Schmidt, 1852) | 1905 or earlier | | | Kanal La Manche (Plymouth-Sund) |
Syndesmis echinorum Francois, 1886 | 1901 or earlier | | | from Echinus esculentus (Echinidae). |
Sabussowia dioica (Claparede, 1863) | 1893 or earlier | | | Gamble's "indentification of his specimens as Fovia affinis was corrected by Wilhelmi (1908, 1909) |