Cidarid species 30

Family: Cidaridae

Order: Cidaroida

Locality:off Taiwan, deep water

Dimensions: mm Ø

 

The specimen, which I received without taxon, has greenish/olive spots on the collar. Prionocidaris baculosa has purplish spots and Prionocidaris australis has white spots. Does anyone know, which species has greenish/olive spots?