Endoxocrinus (Diplocrinus) wyvillethomsoni ( Thomson 1872a )

Madeira, Patrícia, Kroh, Andreas, Cordeiro, Ricardo, De, António M., Martins, Frias & Ávila, Sérgio P., 2019, The Echinoderm Fauna of the Azores (NE Atlantic Ocean), Zootaxa 4639 (1), pp. 1-231 : 160-161

Erroneous— Endoxocrinus (Diplocrinus) wyvillethomsoni ( Thomson 1872a)

Reports for the Azores:

Endoxocrinus Wyvillethomsoni ( Thomson, 1872a) —A.H. Clark 1911: 45–46;

Annacrinus wyvillethomsoni (Jeffreys, nomen nudum; Thomson, 1872a)— Macurda & Roux 1981: 169–219, pl. 7, figs. 1–10, pl. 8, figs. 1–9, pl. 9, figs. 1–12, pl. 10, figs. 1–9, pl. 11, figs. 1–8, pl. 12, figs. 1–12, pl. 13, figs. 1–10, pl. 14, figs. 1–9;

Endoxocrinus (Diplocrinus) wyvillethomsoni (Jeffreys, 1870) — Mironov et al. 2014: 117.

Type locality: off Portugal (39°42’N, 9°43’W) .

See: Macurda & Roux (1981); David et al. (2006: 39–40, figs. 17, 19b, 20d).

Occurrence: Northeast Atlantic, from the Bay of Biscay to Morocco, including the archipelagos of Madeira and Canaries (A.H. Clark 1911, 1923).

Depth: 1,214(?900)– 2,070 m ( David et al. 2006).

Habitat: on various substrates and under a variety of hydrodynamic conditions ( Roux 1985, David et al. 2006).

Remarks: we do not know on what basis A.H. Clark (1911) listed the Azores among the localities where Endoxocrinus wyvillethomsoni could be found. Surprisingly, he remarks that?Bell may have confused Ferne Islands (British Channel) with Faial Island (Azores), since this species was not known to occur in the former area. Thus, the presence of E. wyvillethomsoni in the archipelago seems to be a result of A.H. Clark’s interpretation on a possible mistype by Bell. In later works by the same author (e.g., A.H. Clark 1923), the Azores was never again included in the geographical range of this species. A subsequent reference to the archipelago by Macurda & Roux (1981) was based on A.H. Clark (1911) instead of A.H. Clark (1923) cited by the authors. Overall, to our knowledge no specimens belonging to E. wyvillethomsoni from the Azores were ever documented and thus its historical inclusion in the fauna of the archipelago should be considered erroneous. Additionally, Jeffreys (in Carpenter & Jeffreys 1871) was the first author to name this deep-water crinoid. However, in a review by Macurda & Roux (1981), Jeffrey’s name was considered nomen nudum. For this reason, they appointed a later reference by Thomson (1872a: 767–769) in which this species is fully described, a view followed herein.