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).

100 μm 200 μm 300 μm; x 200 : 50 μm 100 μm 150 μm; x 400