| Aspect: | Appears as a light brown, or brown, solid boulder-shaped mass of tight, small and deeply pitted corallites. |
| Population: | Common. |
| Notable feature: | Corallites are relatively small, funnel shaped, and bordered by some 28 septa, the outer edges of which (the costae) penetrate those of a neighbouring polyp septa array in a manner reminiscent of cogworks. |
| Environment: | Relatively shetered areas at depths of between 3 and 20 metres. |
| Behaviour: | - |