Hyrtios proteus
Duchassaing & Michelotti, 1864
Description:
Cake-shaped, up to 10 x 9 x 7 cm, with protruding lobes. Coarsely cavernous. Regularly conulose; conules 1-2 mm high, 3 mm apart. Oscules 2-5 mm in diameter, inconspicuous, single or in groups on top of the lobes. Consistency very spongy, not easily torn.
Color:
Black.
Habitat:
Only known from reef localities.
Distribution:
St Thomas and Curacao.