Stereocidaris alcocki ( Anderson, 1894 )

Filander, Zoleka & Griffiths, Charles, 2017, Illustrated guide to the echinoid (Echinodermata: Echinoidea) fauna of South Africa, Zootaxa 4296 (1), pp. 1-72 : 15

* Stereocidaris alcocki ( Anderson, 1894)

Fig. 10 . A–C.

Stereocidaris tricarinata: Döderlein, 1906: 112 –114. Pl. X, Fig. 7 . Pl. XXXVI, Fig. 3 . Stereocidaris alcocki: Mortensen, 1928a: 266 . Pl. LXXI, Fig. 8 . Pl. LXXXII, Fig. 18 ; Schultz, 2011: 1037; Filander & Griffiths, 2014: 51. Pl. I, Fig. D.

Material examined. A28229

Identification. Globular, solid test. Apical disc with oculars insert, genital plates raised. Primary spines with three keels basally, two arranged laterally and one on underside; scrobicular spines having longitudinal furrows.

Global maximum size. Maximum test diameter 32 mm.

Global distribution. Restricted to Indian Ocean ( Schultz 2011) including East coast of South Africa, depth 371 – 850 m.

Figures

FIGURE 3. The body plan of an irregular echinoids or heart urchin (Echinocardium cordatum), showing terminology of different body parts.

FIGURE 7. Kionocidaris striata (MBC-A 022213): A. Map showing distribution. B. Apical system of preserved specimen.

FIGURE 8. Phyllacanthus imperialis (SAMC-A 23447): A. Map showing distribution. B. Aboral view of preserved specimen.

FIGURE 10. Stereocidaris alcocki (SAMC-A 28229): A. Map showing distribution. B. Side view (close-up) of preserved specimen. C. Apical system of preserved specimen.

FIGURE 18. Araeosoma paucispinum (SAMC- A 222221). A. Map showing distribution. B. Aboral view of preserved specimen. C. Oral view of preserved specimen.