Plate XV from "An account of the petrological, botanical, and zoological collections made in kerguelen's land and rodriguez during the transit of Venus expedition carried out by order of Her Majesty's Government in the years 1871–1875".

Species on the plate:

• 1–4 – Hermadion longicirratus Kinberg, 1856 (Polychaeta: Polynoidae),
• 5–9 – Eucranta mollis (McIntosh, 1876) (=Eupolynoë mollis McIntosh, 1876) (Polychaeta: Polynoidae),
• 9–12 – Platynereis magalhaensis Kinberg, 1866 (=Nereis eatoni McIntosh, 1876) (Polychaeta: Nereididae),
• 13 – Amphitrite kerguelensis McIntosh, 1876 (lapsus in original: Amphritrite kerguelenensis) (Polychaeta: Terebellidae),
• 14–15 – Thelepus setosus (Quatrefages, 1866) (=Neottis antarctica McIntosh, 1876) (Polychaeta: Terebellidae),
• 16 – Serpula sp. (Polychaeta: Serpullidae),
• 17–18 – Parborlasia corrugatus (McIntosh, 1876) (=Parborlasia corrugatus McIntosh, 1876) (Nemertea: Heteronemertea: Cerebratulidae).

Captions and symbols:

1. Surface of Hermadion longicirratus scale (elytra). The scale is curving away from observer at lower end.
2. Notoseta (bristle from parapodium dorsal branch) of Hermadion longicirratus.
3. Tip of Hermadion longicirratus notoseta.
4. Neuroseta (bristle from parapodium ventral branch) in Hermadion longicirratus. Taken from the center of tuft.
5. Outer and anterior part of Eucranta mollis scale. The scale is curving away from observer at lower end.
6. Tip of Eucranta mollis notoseta.
7. Tip of Eucranta mollis neuroseta from upper tuft.
8. Tip of Eucranta mollis neuroseta from underside of upper tuft.
9. Tip of Eucranta mollis neuroseta from center of lower tuft.
10. Long-tipped neuroseta of Platynereis magalhaensis.
11. Short-tipped neuroseta of Platynereis magalhaensis.
12. 25th parapodium of Platynereis magalhaensis.
13. Anterior hook of Amphitrite kerguelensis.
14. Anterior hook of Thelepus setosus.
15. Tips of Thelepus setosus anterior hooks.
16. Anterior hook of Serpula sp.
17. Transverse section of Parborlasia corrugatus body wall:
    • d’, d’’– pigmented layer,
    • 2 – black band,
    • 3 – translucent layer,
    • e – outer longitudinal muscles of body wall,
    • e’ – circular muscles of body wall,
    • e’’ – inner longitudinal muscles of body wall,
    • v – vascular mesh around oesophagus,
    • cm – circular muscles of oesophagus,
    • j – glandular lining of oesophagus.
18. Transverse section of Parborlasia corrugatus proboscis:
    • a – cuticula,
    • b – outer longitudinal muscles of body wall,
    • c – circular muscles of body wall,
    • d – basement layer,
    • e – inner longitudinal muscles of body wall,
    • f – glandular lining of proboscis],
    • g – lozenge-shaped region where bands of outer longitudinal muscles cross.