TABLE OF CONTENTS 



PAGE 



Introduction 5 



Materials and methods - 6 



Analysis of Color Patterns ~ 13 



Color Patterns and Elytral Structures 13 



The Color Pattern Plan 19 



Color Pattern and Pigment Development 21 



Experimental Modification of Patterns 38 



Geographic Variation of Patterns - 40 



Colors of Tiger Beetles 46 



Causes of Colors - ■■ 46 



Ontogeny of Color 47 



Relation of Ontogenetic Stages to Geographic Races 49 



Geographic Variation in Color 52 



Experimental Modification of Color _ 55 



Relation of Colors and Color Patterns to Climate 56 



Geographic Center of the Group on the Basis of Patterns 57 



General Discussion .- - 58 



Pattern Tendencies - 58 



Bearing of the Color Pattern Mechanism on Orthogenesis 63 



Bearing of the Pattern ^Mechanism on the Biogenetic Law 65 



Summary of Conclusions „ -- 66 



Patterns ..._ - 66 



Color - - 67 



Geography 67 



Bibliography .- 68 



Explanation of Plates "i 



