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 71 



