Pourtalesia alcocki Koehler, 1914

Fig. 63 A–D.

Pourtalesia alcocki nov sp: Koehler, 1914: 8 –17. Pl. 1, Figs 1–14, Pl. 16, Figs 1–15. Pourtalesia carinata: Bell, 1904: 172 .

Pourtalesia alcocki: H.L. Clark, 1923: 399 . Pl. XIII; H.L. Clark, 1925a: 191; Mortensen, 1950: 146 –147; Clark & Courtman- Stock, 1976: 246; Schultz, 2009: 608, Figs 1042–1043.

Material examined. MBC-A 022229; MBC-A 022271; A22229.

Identification. Easily identified by the unusual bottle shaped test and posterior rostrum.

Global maximum size. Maximum test length 50 mm.

Global distribution. Western Indian Ocean from Gulf of Oman to West coast of South Africa, at 1450–2380 m depth (Schultz 2010).

Remarks. Inhabits deep-waters on continental slope, where feeds by burrowing through uppermost layer of substrate. Feeding occurs when the animal moves forward and detritus-rich sediment is pressed into the anterior groove (Schultz 2009).