Arachnoides

Not to be confused with Arachniodes.

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.

Arachnoides
Arachnoides tenuis
Scientific classification
Kingdom:	Animalia
Phylum:	Echinodermata
Class:	Echinoidea
Order:	Clypeasteroida
Family:	Clypeasteridae
Genus:	Arachnoides Leske, 1778[1]
Type species
Echinus placenta Linnaeus, 1758
Species
See text

Species

The World Register of Marine Species list the following species as being in this genus:- ^[1]

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

Arachnoides zelandiae Gray, 1855 New Zealand: Synonym of Fellaster zelandiae (Gray, 1855)^[2]