12 Boreochiton ruber

12 Boreochiton ruber

Length 14.5 mm. North Yorkshire. September 2014. (leg. Paula Lightfoot).
Live specimen, anaesthetised to allow foot to be pressed aside to reveal thirteen ctenidia (1) in right mantle-cavity; in posterior half of cavity only (merobranch arrangement).
Pink border around foot and head (2).
Hyponotum shifted outwards to form channel (3) at posterior for exhalent water.

KEY ID FEATURES and similar species at: 01 Boreochiton ruber. Length 12mm. North Yorkshire. September 2014. (leg. Paula Lightfoot).