45 Cepaea hortensis album. COMPARISON images of C. nemoralis with typical brown lip. Pennine foothills, V.C. Derbyshire, England. August 2018.

The usual colours of adult, thickened, aperture lips give rise to the vernacular names "White-lipped snail" (for C. hortensis) and "Brown-lipped snail" (for C. nemoralis), but these names can lead to confusion and misidentification.
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) . Image 46Ch 46 Cepaea hortensis album. COMPARISON images of C. nemoralis with atypical white lip. Top line: Pennine foothills, V.C. Derbyshire, Aug. 2018. Lower line: Lowland Cheshire, England, March, 2001. shows two English C. nemoralis with white lips.