From:
Thomas Vernon Wollaston
To:
Charles Robert Darwin
Date:
[Nov–Dec 1857]
Source of text:
DAR 16: 223
Summary:
He was unaware that varieties occurred proportionately more in large genera.
Recommends a work [Leonard Gyllenhaal, Insecta Suecica, 4 vols. (1808–27)] for tabulating varieties.
Lists "close geographical representatives of Europaean species" based on the species numbers [in T. V. Wollaston, Catalogue of the coleopterous insects of Madeira (1857)].
Contributor:
Darwin Correspondence Project
