X 
COLOUR IN NATURE 
Insects — General Aspects of Insect Coloration — Variation in 
Colour: (i) Natural, (2) Artificially Produced—The Colours of 
Spiders: (1) 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 : (1) 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 . . 184 
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 Larva- 
Development of Colour—The Relation of the Larval and Adult 
