Polycyathus

Polycyathus is a genus of small corals in the order Scleractinia, the stony corals. Most species occur in the Pacific Ocean.

Species
Species in the genus include:
 * Polycyathus andamanensis Alcock, 1893
 * Polycyathus atlanticus Duncan, 1876
 * Polycyathus chaishanensis Lin et al., 2012
 * Polycyathus difficilis Duncan, 1889
 * Polycyathus fulvus Wijsman-Best, 1970
 * Polycyathus furanaensis Verheij & Best, 1987
 * Polycyathus fuscomarginatus (Klunzinger, 1879)
 * Polycyathus hodgsoni Verheij & Best, 1987
 * Polycyathus hondaensis (Durham & Barnard, 1952)
 * Polycyathus isabela Wells, 1982
 * Polycyathus marigondoni Verheij & Best, 1987
 * Polycyathus mayae Cairns, 2000
 * Polycyathus muellerae (Abel, 1959)
 * Polycyathus norfolkensis Cairns, 1995
 * Polycyathus octuplus Cairns, 1999
 * Polycyathus palifera (Verrill, 1869)
 * Polycyathus persicus (Duncan, 1876)
 * Polycyathus senegalensis Chevalier, 1966
 * Polycyathus verrilli Duncan, 1889