Characters: Colonies are free-living, irregular and dome- or bell-shaped or flat. They are usually attached to the substrate. They are thin and fragile. Septa have distinctive knob-shaped teeth. They are mostly perpendicular to the colony margin, but are sometimes in two or more groups, one group being perpendicular to the colony margin.
Colour: Brown with pale margins. Corallite centres may be white.
Similar Species: Halomitra meierae. See also H. pileus, which is less fragile and does not have club-shaped septal teeth, and Zoopilus echinatus, which has a similar superficial appearance but dissimilar septa.
Habitat: Sheltered habitats.
Abundance: Rare.
Taxonomic References: Hoeksema (1989a); Veron (2000a);
