From:
Charles Robert Darwin
To:
Alfred Russel Wallace
Date:
23 Feb 1867
Source of text:
Marchant ed. 1916, 1: 178
Summary:
Asks why caterpillars are sometimes beautifully coloured. It poses a problem for view that sexual selection is the explanation of colours of male butterflies.
More on mimetic butterflies.
Contributor:
Darwin Correspondence Project