Calliostoma arx is a species of sea snail, a marine gastropod mollusk in the family Calliostomatidae.
Some authors place this taxon in the subgenus Calliostoma (Benthastelena)
Description
The height of the shell attains 18 mm. Distribution This species occurs in the Pacific Ocean off Tonga.
References
Vilvens C. 2005. New records and new species of Calliostoma and Bathyfautor (Gastropoda: Calliostomatidae) from the Vanuatu, Fiji and Tonga. Novapex 6(1-2): 1-17 Bouchet, P.; Fontaine, B. (2009). List of new marine species described between 2002-2006. Census of Marine Life.