VI CONTENTS. 



CHAPTER III. 

 Pll TECTI VE COL ORA'I ION. 



Special Colour Resemblances. Protection afforded by Resemblances of this 

 kind chiefly efficacious against Vertebrate Enemies. Some Evidence 

 showing that Caterpillars are concealed by Protective Coloration from 

 Enemies. Protective Coloration of the Iguana. Protective Colora- 

 tion occasionally appears to be Superfluous. Protective Resemblance 

 in an Annelid. Protective Coloration the prevailing device among 

 Leaf-f ceding Caterpillars. Protective Coloration in Man. Green 

 Colour of the Moth. Longitudinal Striping of Caterpillars. Longi- 

 tudinal Striping found in all the species of the Butterfly Family 

 Satyridre. These Larva? usually feed by Night and often conceal 

 themselves by Day. Internal-feeding Larvae sometimes Striped. 

 Striping sometimes occurs in Certain Species Only of a Genera. 

 Striped Larvae do not always feed on or among Grasses. Occasional 

 Absence of Coloration in Internal-feeding Caterpillars. The Resem- 

 blance of the Larvse of Geometers to Twigs. Comparative Rarity of 

 Green Tree-frequenting Animals an Argument in favour of Selection. 

 Deceptively-coloured African Mantis. Protective Coloration in Spiders. 

 Do Animals select Resting-places which are in Harmony with 

 their Colour / Indifferent Colours. Certain apparently Protectively 

 Coloured Animals probably do not owe their .Coloration to Natural 

 Selection. Specific Characters retained even in Insects which imi- 

 tate the same Environment. Protection often due to Multiplicity of 

 Surroundings. Colours of Pelagic Organisms. Protective Resem- 

 blances due to Causes other than Natural Selection. Combination 

 of Many Methods of Defence. Dimorphism in Coloration. Variable 

 Protective Resemblances in Chrysalids. Variable Protective Coloration 

 in Vertebrates 83 



CHAPTER IV. 



1 \ 'ARNING COL OK ATI OX. 



The Magpie-moth Caterpillar as an Instance of Warning Colours. Earlier 

 Experiments with Warniugly-coloured Insects. Some Experiments 

 upon the "Palatability of Various Animals. Warning Colours can only 

 be safely adopted by a comparatively Small Number of Animals. 

 Objections to the Current Theory of Warning Coloration. The Wings 

 of some Inedible Butterflies resist Injury. Dr. Eisig's Theory of 

 Warning Colours. Connection between Integumental Pigment and 

 Excretory Products. Warning Colours of Nudibranchs. Warning- 

 Coloration in Wasps. Dr. Eisig's View not universally applicable. 

 The Warning Coloration of the Skunk. Warning Coloration in Other 

 Mammals. Warning Coloration in Reptiles. Warning Coloration in 

 Amphibia. Bright Colours not always used as a Warning. Instance 

 of Alluring Coloration in a Lizard. Other Examples of Alluring Colours. 

 Bright Colours and Large Si/.e of the Fins in certain Fish may have 

 a 1'rotectivc Value. . 1 IS 



