Jaeger, 1833
H. (Metriatyla) scabra is grey/black (above) with dark transverse wrinkles. It is grey/white below. It is a medium-sized species (to 400 mm), somewhat flattened, and firm to pliable. Spicules are well developed tables and knobbed buttons (H. scabra spicules[/l], [l]h_scabra_spicules_2.jpgH. scabra spicules 2[/l]). This [l][m]Glossary[/m][r]Species[/r]species can be found on reefs and in coastal areas; it may be exposed or partially buried in sand or sea-grass flats.