Some minute land snails lay disproportionally large eggs, and the reason is unknown. A possibility is the “Kiwi Syndrome”, in which natural selection pressures associated with low egg predation, heavy predation of the young, and a minimal viable size for hatchlings, force small females to invest in relatively large offspring at the cost of reduced fecundity.

Keywords: Punctum pygmaeum, egg size, predation, fecundity, Apteryx.