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Bates, H. W. in correspondent 
1860-1869::1868::04 in date 
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From:
Charles Robert Darwin
To:
Henry Walter Bates
Date:
15 Apr [1868]
Source of text:
Cleveland Health Sciences Library (Robert M. Stecher collection)
Summary:

CD has questions related to colour differences in the sexes of butterflies, especially in relation to HWB’s paper ["On variation in sexes of Argynnis diana", Proc. Entomol. Soc. Philadelphia 4 (1865): 204–7].

Mentions that his MS on Lepidoptera [for Descent] is longer than he intended and the information is four-fifths owed to HWB.

Contributor:
Darwin Correspondence Project
From:
Henry Walter Bates
To:
Charles Robert Darwin
Date:
20 Apr 1868
Source of text:
DAR 82: A42–3
Summary:

In addition to the drawing of a caterpillar which CD intends to use,

HWB sends information on differences of colour and pattern between the sexes of species of Papilio.

Argynnis diana and A. sagana have females that are brightly coloured, but these may be cases of protective mimicry.

Contributor:
Darwin Correspondence Project
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From:
Charles Robert Darwin
To:
Henry Walter Bates
Date:
22 Apr [1868]
Source of text:
Cleveland Health Sciences Library (Robert M. Stecher collection)
Summary:

Thanks HWB for answering questions.

The MS on Lepidoptera is almost finished and he is glad HWB will read it; he is fearful of mistakes, not being familiar with the subject.

Contributor:
Darwin Correspondence Project