Family 12. EUPSAMMIDAE.--Solitary or colonial perforate corals,
branching, massive, or encrusting. Septa radial; the primary septa
usually compact, the remainder perforate. Theca perforate. Synapticula
present in some genera. Typical genera--_Stephanophyllia_, Michelin.
_Eupsammia_, M. Edw. and H. _Astroides_, Blainv. _Rhodopsammia_, M.
Edw. and H. _Dendrophyllia_, M. Edw. and H.