| Authors(s) | McIntosh, W.C. |
| Year | 1873-74 |
| Title | A monograph of the British annelids, Part I. The nemerteans. Ray Society, London. |
- Amphiporus bioculatus
- Amphiporus hastatus
- Amphiporus lactifloreus
- Carcinonemertes carcinophila
- Cephalothrix linearis
- Cerebratulus fuscus
- Emplectonema gracile
- Emplectonema neesii
- Lineus bilineatus
- Lineus lacteus
- Lineus longissimus
- Lineus sanguineus
- Micrura fasciolata
- Micrura purpurea
- Nemertopsis flavida
- Nipponnemertes pulcher
- Oerstedia dorsalis
- Tetrastemma candidum
- Tetrastemma melanocephalum
- Tetrastemma robertianae
- Tetrastemma vermiculus
- Tubulanus annulatus