Genus: Free-living; skeleton with or without coat; spicules included in a coat more or less visible;
radial siliceous spicules; ordered spicules (Illustrated Guide, 1985).
Mucilaginous envelope with spindle-shaped or discoidal spicules which extend normally
outwards along pseudopodia (Kudo, 1966).
Species: Outer gelatinous envelope crowded with curved lenticular spicules, forming accumulations around pseudopodia; diameter 50-60 μm; nucleus 12-15 μm in diamete; spicules 20 μm long (Kudo, 1966).