16 Rissoa lilacina

16 Rissoa lilacina

The opaque white, triangular, anterior pedal mucous gland (1) discharges mucus from within the bilaminate anterior edge of the foot to lubricate creeping. The gland is edged with a thin greyish or line along each side. Turning and folding are assisted by the transverse crease across the foot (see ).
Shell height 3.6 mm. North Wales, March 2015.
: flic.kr/p/2ogofx8
Sets of OTHER SPECIES: /