To Roland Trimen 2 January [1868]
Summary
CD seeks information on the variation of ocelli within species of butterflies.
Author: | Charles Robert Darwin |
Addressee: | Roland Trimen |
Date: | 2 Jan [1868] |
Classmark: | Royal Entomological Society (Trimen papers, box 21: 62) |
Letter no: | DCP-LETT-5772 |
To Roland Trimen 16 January [1868]
Summary
Thanks RT for drawings of ocelli, especially for the description of ocelli of S. African Saturniidae. Would like to know of any cases in which the ocelli are confined to the male, to illustrate better the case of the peacock.
Author: | Charles Robert Darwin |
Addressee: | Roland Trimen |
Date: | 16 Jan [1868] |
Classmark: | Royal Entomological Society (Trimen papers, box 21: 63) |
Letter no: | DCP-LETT-5790 |
To Roland Trimen 12 February [1868]
Summary
Is interested in the relative numbers of males and females of all animals; wants any instances of males, or females, being in excess.
Author: | Charles Robert Darwin |
Addressee: | Roland Trimen |
Date: | 12 Feb [1868] |
Classmark: | Royal Entomological Society (Trimen papers, box 21: 64) |
Letter no: | DCP-LETT-5867 |
To Roland Trimen 21 February [1868]
Summary
RT’s argument about the Lasiocampa strikes him as very good; asks for any similar cases. Wonders whether male butterflies may serve more than one female.
Author: | Charles Robert Darwin |
Addressee: | Roland Trimen |
Date: | 21 Feb [1868] |
Classmark: | Royal Entomological Society (Trimen papers, box 21: 65) |
Letter no: | DCP-LETT-5908 |
To Roland Trimen [16 March 1868]
Summary
Asks whether RT will call.
Author: | Charles Robert Darwin |
Addressee: | Roland Trimen |
Date: | [16 Mar 1868] |
Classmark: | Royal Entomological Society (Trimen papers, box 21: 66) |
Letter no: | DCP-LETT-6015 |
To Roland Trimen [21 March 1868]
Summary
Arranges for RT to call.
Author: | Charles Robert Darwin |
Addressee: | Roland Trimen |
Date: | [21 Mar 1868] |
Classmark: | Royal Entomological Society (Trimen papers, box 21: 67) |
Letter no: | DCP-LETT-6035 |
To Roland Trimen 27 March [1868]
Summary
Thanks RT for letter which saves him from a "terrible mistake": that no moths were more brilliantly coloured beneath than above. Suggests revised version for comment. [See Descent 1: 397.]
Author: | Charles Robert Darwin |
Addressee: | Roland Trimen |
Date: | 27 Mar [1868] |
Classmark: | DAR 82: A119–20 |
Letter no: | DCP-LETT-6060 |
To Roland Trimen 14 April [1868]
Summary
Has tried using dealers’ price-lists as a guide to sex ratios in Lepidoptera; finds numerous cases in which the sexes bring different prices and in virtually all of them the males are cheaper. This seems to confirm the impression of the field collectors.
Wishes RT good luck with natural history in S. Africa.
Author: | Charles Robert Darwin |
Addressee: | Roland Trimen |
Date: | 14 Apr [1868] |
Classmark: | Royal Entomological Society (Trimen papers, box 21: 68) |
Letter no: | DCP-LETT-6117 |