29 Phorcus lineatus

29 Phorcus lineatus

Foot extends beyond snout when travelling (under glass slide). Slightly raised, forward-travelling waves are tawny (1) with closer-spaced transverse furrows. Firmly attached waves are paler with widely spaced furrows (2) . Papillate periphery of foot enlarged (3).
Shell height 10.1 mm, breadth 12.8 mm. West Anglesey, Wales. March 2014.