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 Trigonocidaris monolini A. Agassiz, 1879 Fig. 41 A–B. Orechinus monolini : Döderlein, 1906 : 196 –198. Pl. XXV, Fig. 1 . Pl. XXXV, Fig. 6 . Pl. XLVI, Fig. 5 ; Döderlein, 1910 : 247 ; H.L. Clark, 1912 : 300 –301; H.L. Clark, 1923 : 383 ; Clark & Courtman-Stock, 1976 : 230 –231. Orechinus monoli : Mortensen, 1943a : 330 –333. Pls. XVI, Figs. 23–29 ; Figs. 1–10 . Trigonocidaris monolini : Schultz, 2011 : 1242 , Figs 2199–2200 . Material examined. None, entry based on literature. Identification. Tubercles encircling apical disc, gonopores on elevated ridges. Global maximum size. Maximum test diameter 14 mm . Global distribution. Hawaii through Malayan region and Kermadec Island to South coast of South Africa , at 318 – 2300 m depth ( Schultz 2011 ). Remarks. Single record off South coast region ( Clark & Courtman-Stock 1976 ), which is not represented in Iziko Museum collection. Similar South African distribution range as T. nitidus , but T. monolini has a tuberculated apical disc and T. nitidus a smooth one.