[155]

F. Muller Crust. Sexual Select

p 29 on inequality of legs

p 30 smelling threads

31-32 Dimorphic males

39 2d case of Dimorphism
How easily Lucanus cd be formed into 2 forms, great Pincers

41. Melita, with legs modified for pincers of male to hold on by

(62. zig-zag folding of antennae sexual—)

116. Sexual differences great in

117 not till adult & in some case - more female more abnormal than male, & young then resemble female.

118 goes on after sexual maturity

(Used)

(over

[155v]

Begin, sexes placed in distinct genera or Families owing to differnt habits as parasitic — not concerned with

Furnished with olfactory hairs — or organ for seizing — even females adapted to be caught — This perhaps necessary for procreation, & not dependent much on struggle between male & male—

Then go on to unequal claw, & argue case.— Fighting Then to colours.—

Müller, Fritz. 1869. Facts and arguments for Darwin. Translated by W. S. Dallas. London: John Murray. Text [Proofs of Figs. 50-51: CUL-DAR81.37-38 Image] Darwin cited this in Descent 1: 328-9, n4: "'Facts and Arguments for Darwin,' English translat. 1869, p. 20. See the previous discussion on the olfactory threads."