RT has sent his observations on orchids to CD. Has found only one case of an insect with a pollinium adhering to it.
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RT has sent his observations on orchids to CD. Has found only one case of an insect with a pollinium adhering to it.
Thanks CD for two letters and his portrait.
CD’s book [Orchids] opened up terra incognita for him.
His work on S. African butterflies continues.
Reports on a moth that punctures peach skins.
Interesting that thoughtful naturalists are forced to admit mutability of species.
Some notes on Oxalis.
Comments on CD’s paper on Linum [Collected papers 2: 93–105].
Sends specimens of dimorphic and trimorphic Oxalis.
Comments on H. W. Bates’s work [Naturalist on the river Amazons].
Butterflies of Mauritius.
RT’s Bonatea paper published by Linnean Society [J. Linn. Soc. Lond. (Bot.) 9 (1867): 156–60].
On ocelli.
Sexual differences and proportion of sexes in butterflies.
Coleoptera.
[See Descent 1: 310; 2: 132.]
Variations in the ocelli of Lepidoptera.
Encloses six pages from his catalogue of S. African butterflies [Rhopalocera Africae australis, 2 pts (1862, 1866)].
Sends prospectus of forthcoming work by his brother [Henry Trimen] and W. T. Thiselton-Dyer [Flora of Middlesex (1869)]. Hopes CD will subscribe.
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.]
On attraction of males by females in moths. H. T. Stainton mentions a case.
Coloration in moths.
Quotes Achille Guénée on relative proportion of sexes in Phalaenites.
Approves CD’s revision on coloration of moths.
Impressed with apparent adverse tendencies: one toward sexual selection, the other toward protection.
Extract from Émile Blanchard’s Metamorphoses, moeurs et instincts des insectes [1868], on attraction of males by female Lepidoptera, and possible explanation.
Thanks CD for his orchid paper ["Fertilization of orchids", Collected papers 2: 138–56]. Comments briefly on orchids.
Discusses moths in which the wing underside is the most brightly coloured, and relates his observations on sexual selection by a moth, Syntomis.