RECORD: Darwin, C. R. 1841.05. Waterhouse showed me some Curculios from Phillippine. CUL-DAR205.5.42. Edited by John van Wyhe (The Complete Work of Charles Darwin Online, http://darwin-online.org.uk/)
REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 1.2023. RN1
NOTE: See record in the Darwin Online manuscript catalogue, enter its Identifier here. Reproduced with permission of the Syndics of Cambridge University Library and William Huxley Darwin. The volume CUL-DAR205.5 contains notes on the principle of divergence, transitional organs and instincts.
The brown crayon number '11' indicates that this document was filed by Darwin in his portfolio for the subject of Divergence.
[42]
May 1841.
Waterhouse showed me some Curculios from Phillippine,  most curiously marked with (a) round gemmed spot transverse lines of small  dots of do & reticulated do!! The two former kinds of marking  exactly same in two genera of same general form, but good genera as shown by  difference in antennæ.— I should have said stated this most beautiful  & peculiar character of marking in Curculioded  absolutely peculiar to Phillippines — But what is more wonderful there is a  Cerambyx with short horns with same general form of body & absolutely  similar peculiar gemmed spot, until antennæ are unfolded no one could doubt  they were the Curculios — so we have demonstrative evidence that some common  cause has impressed given this tufting peculiarly on 2 genera of  Curculio & by selection to on a Cerambyx — if it had only been the former we  might have thought it from descent. Cerambyx shows it is not so — Just  same case as, epidermis on many genera of land shells of Phillippines = several genera groups of insects peculiar to Phillippines, several most common to India—
Such cases of analogy, just as striking. Water[house] knows of in all orders, but doubts any regular law as in Swainson
[42v]
(a) some of the species vary wonderfully= whole bottles full of one variety, without one of another yet series from whole isld shows they must be same— so W. concludes they are local varieties like his case of Nebria—
Waterhouse has never seen half so strange a case. =
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
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