Calliostoma militaris Ihering, 1907 - Brazil, 24mm - Ranges from Rio de Janeiro southward to Rio Negro, Argentina. Taken by fishing boats in 30-60 meters of water. The species is quite rare. Ref.:
Rios, E.C., 1975, Brazilian Marine Mollusks Iconography, p.24, pl.6 f.65.
Calliostoma orion Dall, 1889 - Bahamas, 8mm - The holotype was taken off Havana, Cuba. Reaches a size of about 12mm. Ref.:
Abbott, R.T., 1974, American Seashells, p.46, f.335 / Clench, W.J. & Turner, R.D., The Genus Calliostoma in the Western Atlantic, Johnsonia, Vol.4 No.40 (1960) p.54 pl.35.
Calliostoma ornatum (Lamarck, 1822) - South Africa, 21-22mm - a common reef dweller, taken from intertidal zones down to scuba diving depths. Ref.:
Kilburn, R.N., Taxonomic Notes on South African marine Mollusca (3)*:Gastropoda:Prosobranchia, with descriptions of new taxa of Naticidae, Fasciolariidae, Magilidae, Volutomitridae and Turridae, Ann. Natal Mus. Vol.22(1), p.187, f.1 / Kilburn, R. & Rippey, E., (1982) Sea Shells of Southern Africa, p. 39, pl.8, fig.4.