Robuta

https://www.marinespecies.org/traits/aphia.php?p=taxdetails&id=120208

Marine Species Traits - Siriella armata (Milne Edwards, 1837)

marine species milne edwards traits siriella armata

https://marinespecies.org/aphia.php?p=taxdetails&id=226375

WoRMS - World Register of Marine Species - Siriella clausii G.O. Sars, 1877

marine species worms world register siriella

https://marinespecies.org/aphia.php?p=taxdetails&id=120216

WoRMS - World Register of Marine Species - Siriella thompsonii (H. Milne Edwards, 1837)

marine species worms world register siriella