Dotted slug
Arion circumscriptus
An informal survey of the plant and animal life living in or visiting the grounds of Pointfield, Kelso since 2015
Molluscs: slugs
Small slug; mantle less than one-quarter of body length; body dark grey body becoming paler laterally before prominent dark longitudinal stripe on each side; below the black stripe the base is silvery white. Mantle without spots; paler and with a yellowish tinge. No keel.
Found under stones and logs around the garden moderately frequently.