Dissected female; mantle removed, body wall opened.

Terms are defined in glossary below  .

1:  sole of foot. 2: dorsum of foot. 4: operculum.

9: osphradium. 10: ctenidium.

11: hypobranchial gland.

12: kidney. 13: digestive gland. 15: ovary.

19: proboscis with sheath removed, sucker-like mouth at tip enables it to retain feeding position while radula rasps.

Llŷn Peninsula, Wales. March 2016.