Fig. 42 A–C.
Sterechinus horridus: Döderlein, 1906: 220 –222. Pl. XXVIII, Figs 1–2. Pl. XXXV, Figs 2–3. Pl. XLVII, Figs 10–11; Döderlein, 1910: 248.
Echinus horridus: H.L. Clark, 1923: 384; H.L. Clark, 1924: 7; H.L. Clark, 1925a: 113. Dermechinus horridus: Mortensen, 1943: 112 –117. Pl. XIX, Figs 6–10, Pl. XX, Figs 1–3, Pl. LVI, Figs 22–23, 29– 31; Clark & Courtman-Stock, 1976: 235; Schultz, 2010: 182.
Material examined. MBC-A 023078; MBC-A023372; MBC-A077820; MBC-A077819; MBC-A077821. Identification. Test melon-shaped, ambulacra sunken, corresponding raised interambulacra, giving distinctive appearance. Miliary spines numerous, orange reddish in color.
Global maximum size. Maximum test diameter 90 mm, maximum height 120 mm. Global distribution. South America, West and South coast regions of South Africa, south Australia and Tasmania, Southern New Zealand and Antarctic, at 30–1020 m depth (Döderlein 1910; Mortensen 1943; Schultz 2010)
Remarks. Variation in test height exists, but is not of taxonomic value, as short and high populations co-exist and all other characters match (Mortensen 1943).