(fig. 3 K–L)
Sertularia milneana d’Orbigny, 1846: 26, pl. 11 figs 6–8.
Sertularella milneana – Hartlaub, 1901 a: 39, fig. 18. – Hartlaub, 1905: 639, figs D 4 –E 4. – Nutting, 1904: 98, pl. 24 figs 2–5. – Jäderholm, 1905: 26. – Stepanjants, 1979: 81, pl. 14 fig. 6.
Symplectoscyphus milneanus – Stechow, 1923: 172. – Vervoort, 1972 b: 147, figs 46–50. – Blanco, 1976: 46, pl. 5 figs 1–5. – Blanco, 1981: 159, figs 1–7. – El Beshbeeshy, 1991: 215, fig. 54.
Sertularella plana Jäderholm, 1903: 279, pl. 12 fig. 9, pl. 13 figs 1–2.
Sertularella meridionalis Nutting, 1904: 98, pl. 23 figs 8–9. – Hartlaub, 1905: 641, fig. G 4. – Jäderholm, 1920: 6, pl. 2 fig. 1.
Symplectoscyphus meridionalis – Stechow, 1923: 172. – Blanco, 1967 b: 264, pl. 3 figs 1–2.
Symplectoscyphus subarticulatus – Blanco, 1968: 213, pl. 4 figs 1–3 [not Symplectoscyphus subarticulatus (Coughtrey, 1875)].
Material examined. Stn. 8 – 23.02.2008, 26 m, A 565 (MHNG INVE 62836): several stems, up to 4.5 cm high, gonothecae present; A 580 (MHNG INVE 62837): several stems and fragments up to 6 cm high, gonothecae present.
Type locality. South Patagonia, probably Bay of Ros, South of Rio Negro, Argentina (see Vervoort 1972 b).
Remarks. For a description of this species, we refer to Vervoort (1972 b), who also examined, described and figured both the lecto- and paralectotype of Sertularella meridionalis Nutting, 1904.
World distribution. Magellan Strait (Nutting 1904), Falkland Islands (Jäderholm 1905, Vervoort 1972 b), Argentina (Jäderholm 1920, Blanco 1967 b, both as S. meridionalis, Vervoort 1972 b), Southwest Atlantic and Magellan Strait (Vervoort 1972 b). For an extensive list of records, see Vervoort (1972 b).
Records from Chile. Hanover Island (Nutting 1904, as S. meridionalis), Martha Bank (Jäderholm 1903, as S. plana), South of Chiloé Island (present study).