COLOUR IN NATURE 



Insects — General Aspects of Insect Coloration — Variation in 

 Colour: (i) Natural, (2) Artificially Produced— The Colours of 

 Spiders: (i) Optical, (2) Pigmental — Development of Colour 

 — ^Variation in Colour — Colours of the Sexes — Markings of 

 Spiders Page 163 



CHAPTER IX 



THE COLORATION OF MOLLUSCA AND OF INVERTEBRATES 

 IN GENERAL 



Colours of the Mollusca : (l) of the Mantle, (2) of the Shell, (3) of 

 the Secretions — Pigments of the Mollusca — Green Oysters — 

 Characters of Coloration of Invertebrates — Patterns and Mark- 

 ings of Organisms ; Plants, Coelentera, Leeches, Arthropoda, 

 Mollusca, Vertebrates — Meaning of Patterns . . 1 84 



CHAPTER X 



THE COLOURS OF FISHES 



The Colours of the Lower Vertebrates — General Characteristics of 

 Vertebrate Coloration — Colours of Fishes, their Characters and 

 Distribution in Tropical, Abyssal, and Temperate Forms — 

 Coloration of Flat-fishes — The Pigments and Structural Colours 

 of Fishes . . . 207 



CHAPTER XI 



THE COLOURS OF AMPHIBIANS AND REPTILES 



Colours and Pigments of Amphibia — The Colours of the LarvEe— 

 Development of Colour— The Relation of the Larval and Adult 



