Illustrated guide to the echinoid (Echinodermata: Echinoidea) fauna of South Africa Author Filander, Zoleka Author Griffiths, Charles text Zootaxa 2017 4296 1 1 72 journal article 32399 10.11646/zootaxa.4296.1.1 ad746972-3837-4f1d-bf97-c09e5d7f1bd5 1175-5326 843325 EFE86EDD-D170-4D97-87D9-3125400713EC Pourtalesia alcocki Koehler, 1914 Fig. 63 A–D. FIGURE 63. Pourtalesia alcocki (SAMC-A22229). A . Map showing distribution. B . Lateral view of preserved specimen. C . Oral view of preserved specimen. D . Side view of preserved specimen. 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 ).