Cryptechinus [Goniosigma] enysi (Hutton, 1873); holotype. Oligocene, Trelissic Basin, New Zealand. Lateral view, from Fell, H. B. 1964. Oligocene echinoids from the Trelissic Basin, New Zealand. Transactions of the Royal Society, New Zealand 4(15), 201-205, pls 1-4.
Diameter of test 28 mm.