Stereocidaris microtuberculata Yoshiwara 1898
Family: Cidaridae	Order: Cidaroida
Locality: Phillipines, Mindanao, Balut Island, taken with tangle net ab. 200 m, 2014	Dimensions: 46 Ø x 31 mm
The taxon Stereocidaris microtuberculata came from the seller. In Heinke Schultz, Sea Urchins III, page 1052, one can read, that Shigei 1986 regarded St. microtuberculata as synonymous to Stereocidaris grandis. I cannot prove if it is the one or the other or both or anywhat else.