Arachnoides

Arachnoides is a genus of sea urchin within the family Clypeasteridae, found in the Indo-Pacific oceans. The base is flat and the upper surface is convex.

Species

The World Register of Marine Species list the following species as being in this genus:-

• Arachnoides placenta <small>(Linnaeus, 1758)</small> Australia to Philippines
• Arachnoides tenuis <small>H. L. Clark, 1938</small> Western Australia

Arachnoides zelandiae <small>Gray, 1855</small> New Zealand: Synonym of Fellaster zelandiae <small>(Gray, 1855)</small>

References

• Natural History Museum