Part 5

Importance of the Principle of Utility

Popular Theories of Colour in Animals

Importance of Concealment as influencing Colour

Special modifications of Colour

Theory of Protective Colouring

Objection that Colour as being dangerous should not exist in Nature

Mimicry

Mimicry among Lepidoptera

Lepidoptera mimicking other Insects

Mimicry among Beetles

Beetles mimicking other Insects

Insects mimicking Species of other Orders

Cases of Mimicry among the Vertebrata

Mimicry among Snakes

Mimicry among Birds

Mimicry among Mammals

Objections to Mr. Bates' Theory of Mimicry

Mimicry by Female Insects only

Cause of the dull Colours of Female Birds

Use of the gaudy Colours of many Caterpillars

Summary

General deductions as to Colour in Nature

Conclusion

IV.--The Malayan Papilionidae, or Swallow-tailed Butterflies, as illustrative of the Theory of Natural Selection. Pp. 130-200

Special value of the Diurnal Lepidoptera for inquiries of this Nature

Question of the rank of the Papilionidae

Distribution of the Papilionidae

Definition of the word Species