Shell height 12.1 mm. Worn, stained, live specimen. On worn shells the periostracum survives longest in the shelter of the grooves between the costae and spiral ridges. On this specimen, the grooves on the neck of the siphonal canal are worn away, and the exposed shell is stained green, probably by algae.
Adult flesh is light sienna (yellowish) heavily marked with small blotches of white and brown/black. Juveniles have whitish flesh with dark marks, see image 20Tr 20 Tritia reticulata. Juvenile. Shell height 5.6mm. West Anglesey, Wales. May 2016. .
West Anglesey, Wales. March 2014.

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