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Shell measurements Helix pomatia
Shell nr Length Width Aperture length Aperture width Ap.length:width ratio
1 42 39 25 19 1.31
2 43 41 26 21 1.24
3 38 36 24 19 1.26
4 38 37 24 20 1.20
5 39 38 25 19 1.31

Shell measurements Helix aspersa(Cornu aspersum)
Shell nr Length Width Aperture length Aperture width Ap.length:width ratio
1 23 26 15 13 1.15
2 26 27 17 14 1.21
3 25 27 16 14 1.14
4 23 23 15 13 1.15
5 25 25 16 14 1.14
6 25 25 17 15 1.13
7 32 29 19 16 1.19
8 27 26 17 15 1.13
9 23 23 16 14 1.14
10 22 27 16 14 1.14

Shell measurements Achatina achatina(white shell type)
Shell nr Length Width Aperture length Aperture width Ap.length:width ratio
1 61 33 30 17 1.76
2 55 31 33 17 1.94
3 62 32 30 18 1.66
4 68 34 35 19 1.84
5 54 29 27 16 1.69
6 47 32 26 15 1.73

Shell measurements Achatina achatina
Shell nr Length Width Aperture length Aperture width Ap.length:width ratio
1 122 67 68 38 1.79
2 117 68 67 35 1.94
3 115 62 67 37 1.81