From:
Francis Walker
To:
Charles Robert Darwin
Date:
1 Feb 1861
Source of text:
DAR 46.2 (ser. 3): 54–5
Summary:
Identifies two dipterous species of parasites [chalcidites].
Was not able to attend to the aphids last year, but will make use of CD’s suggestions and "study as much as I can the inquiry as to species".
Contributor:
Darwin Correspondence Project