waltoni

Updated: May 9, 2025

So, in the season of intense heat, the Helix Waltoni of Ceylon, and others of the same family, before retiring under cover, close the aperture of their shells with an impervious epiphragm, which effectually protects their moisture and juices from evaporation during the period of their æstivation.

Sir James Emerson Tennent - Sketches of the Natural History of Ceylon