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From Roland Trimen   13 January 1868

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Summary

Variations in the ocelli of Lepidoptera.

Encloses six pages from his catalogue of S. African butterflies [Rhopalocera Africae australis, 2 pts (1862, 1866)].

Author:  Roland Trimen
Addressee:  Charles Robert Darwin
Date:  13 Jan 1868
Classmark:  DAR 84.1: 40–2, 168
Letter no:  DCP-LETT-5785

From Roland Trimen   10 February 1868

Summary

Sends prospectus of forthcoming work by his brother [Henry Trimen] and W. T. Thiselton-Dyer [Flora of Middlesex (1869)]. Hopes CD will subscribe.

Author:  Roland Trimen
Addressee:  Charles Robert Darwin
Date:  10 Feb 1868
Classmark:  DAR 178: 186, DAR 84.1: 135b
Letter no:  DCP-LETT-5857

From Roland Trimen   20 February 1868

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Summary

Proportion of sexes in butterflies; discussion of subject at meeting of Entomological Society, London.

Attraction of males by female Lasiocampa quercus. [see Descent 1: 311–12.]

Author:  Roland Trimen
Addressee:  Charles Robert Darwin
Date:  20 Feb 1868
Classmark:  DAR 85: B59–60a
Letter no:  DCP-LETT-5902

From Roland Trimen   20 March [1868]

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Summary

On attraction of males by females in moths. H. T. Stainton mentions a case.

Author:  Roland Trimen
Addressee:  Charles Robert Darwin
Date:  20 Mar [1868]
Classmark:  DAR 86: A92–3
Letter no:  DCP-LETT-6030

From Roland Trimen   26 March 1868

Summary

Coloration in moths.

Quotes Achille Guénée on relative proportion of sexes in Phalaenites.

Author:  Roland Trimen
Addressee:  Charles Robert Darwin
Date:  26 Mar 1868
Classmark:  DAR 81: 76, DAR 85: B61–2, DAR 84.1: 134–5
Letter no:  DCP-LETT-6055

From Roland Trimen   27 March 1868

Summary

Approves CD’s revision on coloration of moths.

Impressed with apparent adverse tendencies: one toward sexual selection, the other toward protection.

Author:  Roland Trimen
Addressee:  Charles Robert Darwin
Date:  27 Mar 1868
Classmark:  DAR 82: A120v
Letter no:  DCP-LETT-6061

From Roland Trimen   13 April 1868

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Summary

Extract from Émile Blanchard’s Metamorphoses, moeurs et instincts des insectes [1868], on attraction of males by female Lepidoptera, and possible explanation.

Author:  Roland Trimen
Addressee:  Charles Robert Darwin
Date:  13 Apr 1868
Classmark:  DAR 85: B50–1
Letter no:  DCP-LETT-6116
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letter (7)
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Trimen, Rolanddisabled_by_default
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Darwin, C. R.disabled_by_default
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