RECORD: Darwin, C. R.  Wallace A.R. On the Phenomena of Variation and Geographical Distribution as Illustrated by the Papilionidæ of the Malayan Region. `Linnean Transactions' 25 1865: 6. [1865] CUL-DAR81.103 Transcribed by Kees Rookmaaker, edited by John van Wyhe. (Darwin Online,

REVISION HISTORY: Transcribed by Kees Rookmaaker, corrected and edited by John van Wyhe. RN1


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Reproduced with the permission of the Syndics of Cambridge University Library and William Huxley Darwin.


Linn. Trans. Vol. 25 Part I, p. 6 Wallace on Butterflies, with 2 females different. — Here difference minute p. 8 question in acquiring difference of sexual character in ♀

p 9. Dysticus females of 2 forms. —

p. 10 different Habits in 2 sexes — See also Bates Trends & Paper, (in Linn Transact?)

36 Variability of Females. Mention the of males —

Add after specifying the sexes sometimes differ widely in Habit — Some dipetra males & females are blood-sucker or flower-feeders.

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Citation: John van Wyhe, editor. 2002-. The Complete Work of Charles Darwin Online. (

File last updated 2 July, 2012