Spatangus multispinus Mortensen, 1925. Plates 1, 2, 5 .

Numerous specimens have been examined from shelf stations in Cook Strait, as well as 63 individuals from deeper water (Fell, 1958). Bathymetric range, 36–790m.

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Distribution: Hawke's Bay, Cook Strait, Chatham Islands. The diagnostic characters, set out in the key above, are illustrated in Plate 1.