Diameter of shells over 21mm. Maximum diameter for C. hortensis is 20mm, but usually less.
The spiral bands on the whorls share the lack of the "usual" brown pigment on the lips of these C. nemoralis specimens. On both species, the degree to which the colour on the interior of the lip shows on the exterior depends on the strength/translucency of the exterior ground colour. The lower specimen has a strong yellow exterior lip that conceals the white inner lip.
Some populations of C. nemoralis have many specimens with white lips. Of 8 C. nemoralis (mucus glands and love darts checked) in a study in Croatia, 6 had white lips (Štamol & Slapnik, 2015).
The above white-lipped specimens (mucus glands/love dart checked) were found with typical brown-lipped specimens of C. nemoralis.
The use of the vernacular names "White-lipped snail" (for C. hortensis) and "Brown-lipped snail" (for C. nemoralis) can lead to confusion and misidentification.

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