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.