Gives the evidence on which he relied for his view, which CD thinks is erroneous, of proportion of sexes in Lepidoptera.
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Gives the evidence on which he relied for his view, which CD thinks is erroneous, of proportion of sexes in Lepidoptera.
Results of his breeding have not borne out his opinion that females are more numerous in Lepidoptera [see Descent 1: 313]. Still convinced he is right, suggests only way to settle question is by controlled breeding of large numbers of each species.
Notes sex ratios in Lepidoptera he is breeding.