Characters: Colonies are encrusting to massive. Corallites are cerioid or are in small groups separated by sharply defined walls. Septo-costae are thin, with saw-tooth margins. Most are fused into fan-like groups. Columellae consist of a few pinnules.
Colour: Reddish-brown or grey.
Similar Species: Coscinaraea exesa, which has larger corallites which are not aligned in valleys.
Habitat: Rocky foreshores.
Abundance: Rare.
Taxonomic References: Yabe, Sugiyama and Eguchi (1936); Veron (2000a);
Identification Guides: Nishihira and Veron (1995);