An Illustrated and Cross-Referenced Glossary of
Malacological and Conchological Terms

by Paul S. Mikkelsen

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Term Definition

EPIPHRAGM   A temporary apertural seal of dried mucous constructed prior to AESTIVATION to prevent loss of moisture; found in the higher PULMONATE gastropods, such as Helicidae. The epiphragm may become very thick and even calcified, as in the Achatinidae.

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