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Echinoderms from Southern New Zealand

Amphiura abernethyi Fell, 1951

Amphiura abernethyi Fell, 1951

  • Alert stations: 10, six specimens; 26, one specimen.

These specimens are all only some two-thirds as large as the type material (from Cape Campbell). They are therefore more directly comparable with the related A. norae. Also, the number of mosaic platelets between the radial shields (about 18 to 20) is smaller than in the type A. abernethyi, though still considerably exceeding the corresponding number (5 to 7) in A. norae. The spacing between the radial shields is not so great in the present material as it is in the type, again a feature reminiscent of A. norae. It would not be surprising if eventually it should be found that A. abernethyi and A. norae are the two limiting forms of a cline.