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"Roman snail (Helix pomatia). Note shell covering visceral hump; p.ap., pulmonary aperture (including anus and opening of ureter); f., the foot; g.ap., genital aperture; m., mouth; e., eye on long horn; s.h., one of short horns." -Thomson, 1916

Roman Snail

"Roman snail (Helix pomatia). Note shell covering visceral hump; p.ap., pulmonary aperture (including…

"Helix nemoralis. an, anus; gen. ap, genital aperture; oc. tent. posterior eye-bearing tentacles; pulm, opening of pulmonary sac; tent, anterior tentacles." -Parker, 1900

Snail Parts

"Helix nemoralis. an, anus; gen. ap, genital aperture; oc. tent. posterior eye-bearing tentacles; pulm,…