RECORD: Darwin, C. R. n.d. Additional facts to add to Walsh about adaptation. CUL-DAR81.148. (Cite as: John van Wyhe ed., 2002-. The Complete Work of Charles Darwin Online, http://darwin-online.org.uk/)
REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 2.2022. 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 volumes CUL-DAR80-86 contain material for Darwin's book Descent of man (1871).
Additional facts to add to Walsh about adaptation for male to hold on by.
Acilius sulcatus furrows in female thickly set with hair.  Puncturing also - Spines, Trochanters & Spurs. — Incrassated legs, but this by no means always sexual (Kirby vol. 3 p. 333)
p. 336 Sucking plates & cushions to tarsi
p. 332 Either pair of all 3 pairs of legs elongated sometimes to an extraordinary degree
This must all earlier in discussion, as marked
Kirby, William and Spence, William. 1815-1826. An introduction to entomology. 4 vols. London: Longman, Rees, Orme, Brown, and Green. [Darwin Library-CUL] Darwin cited this in Descent 1: 343.
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 13 August, 2025