Robuta

https://marinespecies.org/turbellarians/aphia.php?p=taxdetails&id=481164

Turbellarians - Phaenocora clavigera Hofsten, 1907

turbellarians phaenocora clavigera

https://www.gutenberg.org/cache/epub/68013/pg68013-images.html

Fors Clavigera: Letters to the Workmen and Labourers of Great Britain (Volume 5 of 8)

fors clavigera letters workmen labourers great