From:
Benjamin Dann Walsh
To:
Charles Robert Darwin
Date:
13 Mar 1866
Source of text:
Field Museum of Natural History, Chicago
Summary:
On the "bullae" as constant, regular generic characters in Hymenoptera. Disagrees with Louis Jurine ["Observations sur les ailes des hyménoptères", Mem. Accad. Sci. Torino 24 (1820): 177–214].
Contributor:
Darwin Correspondence Project