20 Tectura virginea. Shell-length 10mm. Male; shell removed; features seen through translucent mantle and small tear in it over head. North Yorkshire. September 2014.

20 Tectura virginea. Shell-length 10mm. Male; shell removed; features seen through translucent mantle and small tear in it over head. North Yorkshire. September 2014.

3: buccal mass showing through translucent head (20-23Tv)
7: roof of nuchal cavity (20Tv)
9: greyish stomach wall (20-21Tv)
10: digestive gland (20-21Tv)
12: yellow-buff male gonad (20-21Tv)
15: severed U-shape shell-muscle (20-24Tv)
16: mantle skirt (20-22Tv)

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